RHSA-2026:59831
Vulnerability from csaf_redhat - Published: 2026-09-03 12:01 - Updated: 2026-09-03 21:05A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result in privilege escalation, granting an attacker higher system access than intended.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in Samba’s certificate auto-enrollment Group Policy handling. When certificate auto-enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the "check password script" feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the "check password script" is used with %u and the samba-dcerpcd service is started as a system service.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in glibc (GNU C Library). This vulnerability occurs when an application uses the `scanf` family of functions with a `%mc` format specifier, which is used for dynamically allocating memory for character input, and provides an explicit width greater than 1024. This specific combination can lead to a one-byte heap buffer overflow, potentially allowing an attacker to corrupt memory.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in SSSD's LDAP sudo provider. When the ldap_sudo_search_base option is not explicitly configured, SSSD searches the entire LDAP directory tree for sudoRole objects. An authenticated attacker with write access to any subtree can inject a sudoRole object granting root-level sudo privileges on all SSSD-enrolled hosts.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A path traversal flaw was found in SSSD's AD GPO provider. The ad_gpo_extract_smb_components() function does not sanitize .. sequences in the gPCFileSysPath LDAP attribute, allowing an attacker with AD GPO management access to write files outside the GPO cache directory as root. On default RHEL configurations with SELinux enforcing, this can be used to inject Kerberos configuration leading to authentication bypass.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in OpenSSL. A remote attacker could exploit this vulnerability by sending a specially crafted Cryptographic Message Syntax (CMS) EnvelopedData message. During the processing of a KeyTransportRecipientInfo with RSA-OAEP encryption, the system attempts to access an optional parameter field without first verifying its presence. This leads to a NULL pointer dereference, which can cause applications processing the attacker-controlled CMS data to crash, resulting in a Denial of Service (DoS).
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in systemd, a system and service manager. An unprivileged user can exploit this vulnerability by making an Inter-Process Communication (IPC) API call with spurious data. In older versions (v249 and earlier), this can lead to stack overwriting with attacker-controlled content, potentially enabling arbitrary code execution or privilege escalation. In newer versions (v250 and later), the flaw causes systemd to assert and freeze, resulting in a Denial of Service (DoS).
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the message_length field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting message_length values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in Vim. A modeline is used to set specific editor options directly from a text file. However, the `complete`, `guitabtooltip`, `printheader` options and the `mapset` function lack proper security checks, allowing an attacker to bypass restrictions and cause arbitrary OS command execution.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in Vim's zip.vim plugin. A local user could be tricked into opening a specially crafted zip archive, which would allow a path traversal bypass. This vulnerability enables an attacker to overwrite arbitrary files on the system, potentially leading to data integrity issues or further system compromise.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in rsync. When rsync is configured to handle extended attributes (using the -X or --xattrs option), a remote attacker can exploit a use-after-free vulnerability. This occurs because the receive_xattr function incorrectly processes an untrusted length value during a sorting operation, leading to memory corruption. Successful exploitation can result in a denial of service, causing the rsync process to crash, and may potentially allow for arbitrary code execution.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in Vim, an open-source command-line text editor. This command injection vulnerability occurs during tag file processing. A local user could craft a malicious tags file containing backtick syntax in the filename field. When Vim resolves a tag from this file, it executes the embedded command via the system shell, leading to arbitrary code execution with the privileges of the running user.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in the Linux kernel's CIFS (Common Internet File System) client. When the `cifs_sanitize_prepath` function processes specially crafted input, such as an empty string or a string containing only delimiters, it can attempt to read data beyond its allocated memory buffer. This out-of-bounds read can lead to a system crash, resulting in a denial of service.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in OpenSSL. When processing a specially crafted PKCS#7 or S/MIME (Secure/Multipurpose Internet Mail Extensions) signed message, a heap use-after-free vulnerability in the PKCS7_verify() function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, leading to incorrect memory deallocation. A remote attacker could exploit this to cause application crashes, memory corruption, or potentially achieve remote code execution.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in Vim. When decompressing .tgz archives, the Vimuntar function builds shell commands using shellescape() without the {special} flag. This allows a specially crafted archive filename to trigger Vim cmdline-special expansion and execute arbitrary commands in the context of the current user.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0 | — |
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"cve": "CVE-2025-11234",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"discovery_date": "2025-09-30T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2401209"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "qemu-kvm: VNC WebSocket handshake use-after-free",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This CVE has been rated as Moderate because it only affects the WebSocket protocol for communication (the VNC raw TCP socket is not affected) and the use of QEMU\u0027s in-process WebSocket feature is fairly niche.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-11234"
},
{
"category": "external",
"summary": "RHBZ#2401209",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2401209"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-11234",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-11234"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-11234",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11234"
}
],
"release_date": "2025-09-30T12:18:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "qemu-kvm: VNC WebSocket handshake use-after-free"
},
{
"cve": "CVE-2025-54518",
"cwe": {
"id": "CWE-1220",
"name": "Insufficient Granularity of Access Control"
},
"discovery_date": "2026-05-15T05:01:27.379831+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2477784"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result in privilege escalation, granting an attacker higher system access than intended.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-54518"
},
{
"category": "external",
"summary": "RHBZ#2477784",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477784"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-54518",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-54518"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-54518",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54518"
},
{
"category": "external",
"summary": "http://www.openwall.com/lists/oss-security/2026/05/12/15",
"url": "http://www.openwall.com/lists/oss-security/2026/05/12/15"
},
{
"category": "external",
"summary": "http://xenbits.xen.org/xsa/advisory-490.html",
"url": "http://xenbits.xen.org/xsa/advisory-490.html"
},
{
"category": "external",
"summary": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7052.html",
"url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7052.html"
}
],
"release_date": "2026-05-15T03:06:30.822000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation"
},
{
"acknowledgments": [
{
"names": [
"Asim Viladi Oglu Manizada"
]
}
],
"cve": "CVE-2026-1933",
"cwe": {
"id": "CWE-284",
"name": "Improper Access Control"
},
"discovery_date": "2026-03-13T08:29:39.852000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2447317"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Samba\u2019s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "samba: Missing access check on reparse point operations",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated Important severity by Red Hat Product Security, because authenticated users with filesystem-level write permissions may bypass Samba\u2019s SMB-layer read-only protections for reparse point operations.\n\nThe flaw affects shares configured with \"read only = yes\", where Samba failed to properly enforce access checks when setting or deleting reparse point metadata. An attacker with existing write permissions on the underlying filesystem may manipulate SMB reparse point metadata to alter how files are presented to SMB clients, including converting files into symbolic links.\n\nThe vulnerability does not bypass underlying filesystem access controls or grant additional operating system privileges. However, successful exploitation may significantly disrupt file access for users of the affected share, including making large portions of a shared filesystem unavailable through widespread reparse point modification. Because the attack requires authenticated access and existing filesystem write permissions, Privileges Required are assessed as Low (PR:L).\n\n```\n\nThis vulnerability affects Samba versions beginning with the introduction of NTFS-style reparse point support in Samba 4.21.\n\n```",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-1933"
},
{
"category": "external",
"summary": "RHBZ#2447317",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447317"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-1933",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-1933"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-1933",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1933"
},
{
"category": "external",
"summary": "https://bugzilla.samba.org/show_bug.cgi?id=15992",
"url": "https://bugzilla.samba.org/show_bug.cgi?id=15992"
}
],
"release_date": "2026-05-27T12:08:33.095000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Administrators can mitigate this issue by ensuring users who access a read only = yes Samba share do not have filesystem-level write permission to the exported files.\n\nA server administrator may also monitor and remove unintended \"user.SmbReparse\" xattr (extended attributes) and the associated FILE_ATTRIBUTE_REPARSE_POINT \"user.DosAttrib\" bit metadata if exploitation is suspected.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "samba: Missing access check on reparse point operations"
},
{
"acknowledgments": [
{
"names": [
"Pavel Kohout"
],
"organization": "Aisle Research"
}
],
"cve": "CVE-2026-2340",
"cwe": {
"id": "CWE-280",
"name": "Improper Handling of Insufficient Permissions or Privileges"
},
"discovery_date": "2026-03-13T12:55:04.465000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2447318"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Samba\u2019s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "samba: vfs_worm does not block directory modification",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated Moderate severity because exploitation requires authenticated write access to a Samba share already configured to permit file creation and modification.\n\nThe flaw affects the vfs_worm module, which provides additional immutability protections for files after a configurable grace period. Due to improper handling of rename operations, a user with existing write permissions could overwrite files that should have become immutable under the WORM policy.\n\nThe vulnerability does not bypass underlying filesystem access controls or grant additional privileges beyond those already assigned to the authenticated user. However, because the primary purpose of the vfs_worm module is to protect file integrity, the ability to modify protected files results in a high integrity impact.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-2340"
},
{
"category": "external",
"summary": "RHBZ#2447318",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447318"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-2340",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-2340"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-2340",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2340"
},
{
"category": "external",
"summary": "https://bugzilla.samba.org/show_bug.cgi?id=15997",
"url": "https://bugzilla.samba.org/show_bug.cgi?id=15997"
}
],
"release_date": "2026-05-27T10:35:47.805000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Administrators can mitigate this issue by:\n\nSetting read-only permissions on protected files at the underlying filesystem level will prevent modifications.\n\nConfiguring ```worm:grace_period = 0``` (zero or less) in smb.conf will eliminate the writable grace period (will eliminate the window in which the rename can happen), understanding that this may impact workflows requiring multi-step file creation.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "samba: vfs_worm does not block directory modification"
},
{
"acknowledgments": [
{
"names": [
"Arad Inbar",
"Nir Somech",
"Ben Grinberg"
],
"organization": "DREAM Security Research Team"
},
{
"names": [
"Michalis Vasileiadis"
]
}
],
"cve": "CVE-2026-3012",
"cwe": {
"id": "CWE-345",
"name": "Insufficient Verification of Data Authenticity"
},
"discovery_date": "2026-03-13T12:55:02.623000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2447319"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Samba\u2019s certificate auto-enrollment Group Policy handling. When certificate auto-enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "samba: group policy certificate enrollment uses http:// without validation",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security has rated this vulnerability as Important severity. \n\nHowever, exploitation requires several specific non-default conditions to be met. The vulnerable code path is only reachable when Samba Group Policy processing is explicitly enabled using the ```apply group policies = yes``` configuration option and certificate auto-enrollment is configured through Group Policy.\n\nHence, although the vulnerable code is present, it is not exploitable in default RHEL configurations. \n\nIn addition, the attacker must have the ability to intercept or redirect adjacent-network HTTP traffic during certificate retrieval. Because exploitation depends on explicit administrative configuration changes and adjacent-network positioning, Red Hat assesses the attack complexity as High (AC:H).",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-3012"
},
{
"category": "external",
"summary": "RHBZ#2447319",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447319"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-3012",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-3012"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-3012",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3012"
},
{
"category": "external",
"summary": "https://bugzilla.samba.org/show_bug.cgi?id=16003",
"url": "https://bugzilla.samba.org/show_bug.cgi?id=16003"
}
],
"release_date": "2026-05-27T09:17:49.862000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Systems are not affected unless Samba Group Policy processing and certificate auto-enrollment are explicitly enabled.\n\nAdministrators can reduce exposure by:\n\nAvoiding unnecessary use of certificate auto-enrollment.\nEnsuring your \"smb.conf\" does not contain a line like ```apply group policies = yes```. If , group policy is not be enabled, the vulnerable code will not run.\n\nIntercepting the HTTP request requires some control over the local network or other devices to intercept or redirect traffic. Some network administrators might assess this as a low risk on their\nnetworks.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "samba: group policy certificate enrollment uses http:// without validation"
},
{
"cve": "CVE-2026-3833",
"cwe": {
"id": "CWE-178",
"name": "Improper Handling of Case Sensitivity"
},
"discovery_date": "2026-03-09T14:02:09.783000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2445763"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gnutls: GnuTLS: Policy bypass due to case-sensitive nameConstraints comparison",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue is particularly important because it affects the correct enforcement of X.509 nameConstraints, which are specifically designed to limit the authority of subordinate CAs. In GnuTLS, the use of case-sensitive comparisons (memcmp) for dNSName and the domain portion of rfc822Name violates the case-insensitive matching requirements defined in RFC 5280 and RFC 4343. As a result, a constrained subordinate CA can bypass excludedSubtrees or permittedSubtrees restrictions simply by changing the letter casing of a domain in the SAN (e.g., ExAmPlE.CoM vs example.com). Since nameConstraints are often the only mechanism enforcing domain boundaries in delegated PKI hierarchies, this flaw effectively allows a malicious or compromised sub-CA to issue certificates for domains that should be cryptographically prohibited, enabling unauthorized certificate validation and potential TLS impersonation of restricted services.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-3833"
},
{
"category": "external",
"summary": "RHBZ#2445763",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445763"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-3833",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-3833"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-3833",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3833"
},
{
"category": "external",
"summary": "https://gitlab.com/gnutls/gnutls/-/issues/1803",
"url": "https://gitlab.com/gnutls/gnutls/-/issues/1803"
}
],
"release_date": "2026-04-30T17:26:28.969000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "gnutls: GnuTLS: Policy bypass due to case-sensitive nameConstraints comparison"
},
{
"acknowledgments": [
{
"names": [
"Ron Ben Yizhak"
],
"organization": "SafeBreach"
},
{
"names": [
"John Walker"
],
"organization": "ZeroPath"
}
],
"cve": "CVE-2026-4408",
"cwe": {
"id": "CWE-78",
"name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
},
"discovery_date": "2026-05-19T09:24:56.961000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2479762"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the \"check password script\" feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the \"check password script\" is used with %u and the samba-dcerpcd service is started as a system service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "samba: Remote Code Execution in SAMR",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "An Important remote code execution flaw exists in Samba file servers and classic domain controllers when configured with a \u0027check password script\u0027 that uses the unescaped \u0027%u\u0027 substitution character. This vulnerability arises from a non-default configuration where the `samba-dcerpcd` service is started as a system service, allowing an attacker to execute arbitrary commands by injecting shell meta-characters into the username. Active Directory Domain Controllers are not affected.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-4408"
},
{
"category": "external",
"summary": "RHBZ#2479762",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479762"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-4408",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-4408"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-4408",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4408"
},
{
"category": "external",
"summary": "https://bugzilla.samba.org/show_bug.cgi?id=16034",
"url": "https://bugzilla.samba.org/show_bug.cgi?id=16034"
}
],
"release_date": "2026-05-26T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.0,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "samba: Remote Code Execution in SAMR"
},
{
"acknowledgments": [
{
"names": [
"Ali Raza"
]
}
],
"cve": "CVE-2026-4878",
"cwe": {
"id": "CWE-367",
"name": "Time-of-check Time-of-use (TOCTOU) Race Condition"
},
"discovery_date": "2026-03-26T06:56:21.213270+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2451615"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libcap: libcap: Privilege escalation via TOCTOU race condition in cap_set_file()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important flaw. A Time-of-Check-to-Time-of-Use (TOCTOU) race condition in libcap\u0027s cap_set_file() allows a local unprivileged user to escalate privileges. An attacker with write access to a parent directory can exploit a narrow window during file capability updates to redirect capabilities to an attacker-controlled file. This can lead to the injection of elevated privileges into an unintended executable when privileged processes, such as setcap or container tooling, invoke cap_set_file() on attacker-influenced paths.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-4878"
},
{
"category": "external",
"summary": "RHBZ#2451615",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451615"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-4878",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-4878"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-4878",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4878"
},
{
"category": "external",
"summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2447554",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2447554"
}
],
"release_date": "2026-04-06T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "libcap: libcap: Privilege escalation via TOCTOU race condition in cap_set_file()"
},
{
"acknowledgments": [
{
"names": [
"Joshua Rogers"
],
"organization": "AISLE Research Team"
}
],
"cve": "CVE-2026-5260",
"cwe": {
"id": "CWE-126",
"name": "Buffer Over-read"
},
"discovery_date": "2026-05-06T19:50:31.302000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2467450"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gnutls: gnutls: Information disclosure via heap overread in RSA key exchange",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-5260"
},
{
"category": "external",
"summary": "RHBZ#2467450",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467450"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-5260",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-5260"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-5260",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5260"
},
{
"category": "external",
"summary": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-10",
"url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-10"
}
],
"release_date": "2026-04-29T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "gnutls: gnutls: Information disclosure via heap overread in RSA key exchange"
},
{
"cve": "CVE-2026-5450",
"cwe": {
"id": "CWE-131",
"name": "Incorrect Calculation of Buffer Size"
},
"discovery_date": "2026-04-20T21:01:35.403778+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2459853"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in glibc (GNU C Library). This vulnerability occurs when an application uses the `scanf` family of functions with a `%mc` format specifier, which is used for dynamically allocating memory for character input, and provides an explicit width greater than 1024. This specific combination can lead to a one-byte heap buffer overflow, potentially allowing an attacker to corrupt memory.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Because this flaw requires that an affected application call the affected functions with an attacker-supplied value, Red Hat assesses the Attack Complexity of this flaw as High. Additionally, the flaw overflows a single byte onto the heap, so meaningful exploitation requires that the heap is structured such that a single byte can lead to an attacker-controlled outcome, or that the affected functions can be invoked with an attacker-controlled buffer base address. Regarding Attack Vector and Privileges Required, Red Hat assesses these elements as Local and Low respectively, as remote unauthenticated exploitation would require all the conditions above in a library client that listened on a network port and processed attacker-controllable data with the affected library functions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-5450"
},
{
"category": "external",
"summary": "RHBZ#2459853",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2459853"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-5450",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-5450"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-5450",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5450"
},
{
"category": "external",
"summary": "https://inbox.sourceware.org/libc-announce/b11f0003-6ec1-4bd6-b9de-9e38a4efeca3@redhat.com/T/#u",
"url": "https://inbox.sourceware.org/libc-announce/b11f0003-6ec1-4bd6-b9de-9e38a4efeca3@redhat.com/T/#u"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-5450#range-21286997",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5450#range-21286997"
},
{
"category": "external",
"summary": "https://sourceware.org/bugzilla/show_bug.cgi?id=CVE-2026-5450",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=CVE-2026-5450"
}
],
"release_date": "2026-04-20T20:55:41.170000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.0,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width"
},
{
"acknowledgments": [
{
"names": [
"Ian Murphy"
],
"organization": "Red Hat",
"summary": "This issue was discovered by Red Hat."
}
],
"cve": "CVE-2026-14474",
"cwe": {
"id": "CWE-1188",
"name": "Initialization of a Resource with an Insecure Default"
},
"discovery_date": "2026-04-28T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2496556"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in SSSD\u0027s LDAP sudo provider. When the ldap_sudo_search_base option is not explicitly configured, SSSD searches the entire LDAP directory tree for sudoRole objects. An authenticated attacker with write access to any subtree can inject a sudoRole object granting root-level sudo privileges on all SSSD-enrolled hosts.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "sssd: sssd: sudo LDAP provider searches entire directory tree for sudoRole objects by default, enabling privilege escalation",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat has rated this as Important because the attack requires only low-privilege delegated LDAP write access to any subtree, which is a common delegation pattern in enterprise environments. The default ldap_sudo_search_base configuration searches the entire directory tree, allowing sudo rule injection from outside the intended sudoers container.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-14474"
},
{
"category": "external",
"summary": "RHBZ#2496556",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2496556"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-14474",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-14474"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-14474",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14474"
}
],
"release_date": "2026-07-07T09:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Set ldap_sudo_search_base explicitly in /etc/sssd/sssd.conf to restrict the search to the designated sudoers container:\n\n[domain/example.com] ldap_sudo_search_base = ou=sudoers,dc=example,dc=com\n\nAdditionally, restrict LDAP ACLs to prevent non-admin principals from creating sudoRole objects outside the designated sudoers container.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "sssd: sssd: sudo LDAP provider searches entire directory tree for sudoRole objects by default, enabling privilege escalation"
},
{
"acknowledgments": [
{
"names": [
"Ian Murphy"
],
"organization": "Red Hat",
"summary": "This issue was discovered by Red Hat."
}
],
"cve": "CVE-2026-14476",
"cwe": {
"id": "CWE-23",
"name": "Relative Path Traversal"
},
"discovery_date": "2026-04-28T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2496581"
}
],
"notes": [
{
"category": "description",
"text": "A path traversal flaw was found in SSSD\u0027s AD GPO provider. The ad_gpo_extract_smb_components() function does not sanitize .. sequences in the gPCFileSysPath LDAP attribute, allowing an attacker with AD GPO management access to write files outside the GPO cache directory as root. On default RHEL configurations with SELinux enforcing, this can be used to inject Kerberos configuration leading to authentication bypass.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "sssd: sssd: GPO cache path traversal via unsanitized gPCFileSysPath allows Kerberos authentication bypass",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat has rated this as Moderate because exploitation requires high privileges (AD GPO management access) and on default RHEL configurations with SELinux enforcing, the realistic impact is limited to Kerberos authentication bypass via krb5 configuration injection. SELinux blocks writes to most security-critical paths such as /etc/cron.d/.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-14476"
},
{
"category": "external",
"summary": "RHBZ#2496581",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2496581"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-14476",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-14476"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-14476",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14476"
}
],
"release_date": "2026-07-07T09:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Set ad_gpo_access_control = disabled in /etc/sssd/sssd.conf to disable GPO fetching entirely. Note that this removes GPO-based login policy enforcement.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "sssd: sssd: GPO cache path traversal via unsanitized gPCFileSysPath allows Kerberos authentication bypass"
},
{
"cve": "CVE-2026-28390",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2026-04-07T23:01:18.313921+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2456314"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in OpenSSL. A remote attacker could exploit this vulnerability by sending a specially crafted Cryptographic Message Syntax (CMS) EnvelopedData message. During the processing of a KeyTransportRecipientInfo with RSA-OAEP encryption, the system attempts to access an optional parameter field without first verifying its presence. This leads to a NULL pointer dereference, which can cause applications processing the attacker-controlled CMS data to crash, resulting in a Denial of Service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openssl: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This CVE has been rated as moderate by redhat because the vulnerability is limited to a denial-of-service condition caused by a NULL pointer dereference in OpenSSL CMS processing, without evidence of memory corruption or code execution, furthermore the Affected functionality is niche. The vulnerable path requires:\nCMS/S/MIME processing,\nspecifically CMS_decrypt(),\nwith RSA-OAEP KeyTransportRecipientInfo.\nMany OpenSSL consumers never use CMS APIs, never process S/MIME,\nor do not decrypt attacker-controlled CMS objects.\nSo exposure is far narrower than a generic TLS parsing vulnerability.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-28390"
},
{
"category": "external",
"summary": "RHBZ#2456314",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456314"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-28390",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-28390"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-28390",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28390"
},
{
"category": "external",
"summary": "https://github.com/openssl/openssl/commit/01194a8f1941115cd0383bfa91c736dd3993c8bc",
"url": "https://github.com/openssl/openssl/commit/01194a8f1941115cd0383bfa91c736dd3993c8bc"
},
{
"category": "external",
"summary": "https://github.com/openssl/openssl/commit/2e39b7a6993be445fddb9fbce316fa756e0397b6",
"url": "https://github.com/openssl/openssl/commit/2e39b7a6993be445fddb9fbce316fa756e0397b6"
},
{
"category": "external",
"summary": "https://github.com/openssl/openssl/commit/af2a5fecd3e71a29e7568f9c1453dec5cebbaff4",
"url": "https://github.com/openssl/openssl/commit/af2a5fecd3e71a29e7568f9c1453dec5cebbaff4"
},
{
"category": "external",
"summary": "https://github.com/openssl/openssl/commit/ea7b4ea4f9f853521ba34830cbcadc970d2e0788",
"url": "https://github.com/openssl/openssl/commit/ea7b4ea4f9f853521ba34830cbcadc970d2e0788"
},
{
"category": "external",
"summary": "https://github.com/openssl/openssl/commit/fd2f1a6cf53b9ceeca723a001aa4b825d7c7ee75",
"url": "https://github.com/openssl/openssl/commit/fd2f1a6cf53b9ceeca723a001aa4b825d7c7ee75"
},
{
"category": "external",
"summary": "https://openssl-library.org/news/secadv/20260407.txt",
"url": "https://openssl-library.org/news/secadv/20260407.txt"
}
],
"release_date": "2026-04-07T22:00:54.172000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Applications that process Cryptographic Message Syntax (CMS) EnvelopedData messages should be configured to only accept input from trusted sources. Restricting network access to services that process untrusted CMS data can also reduce exposure to this Denial of Service vulnerability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "openssl: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing"
},
{
"cve": "CVE-2026-29111",
"cwe": {
"id": "CWE-1287",
"name": "Improper Validation of Specified Type of Input"
},
"discovery_date": "2026-03-23T22:01:54.593547+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2450505"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in systemd, a system and service manager. An unprivileged user can exploit this vulnerability by making an Inter-Process Communication (IPC) API call with spurious data. In older versions (v249 and earlier), this can lead to stack overwriting with attacker-controlled content, potentially enabling arbitrary code execution or privilege escalation. In newer versions (v250 and later), the flaw causes systemd to assert and freeze, resulting in a Denial of Service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "systemd: systemd: Arbitrary code execution or Denial of Service via spurious IPC API call data",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-29111"
},
{
"category": "external",
"summary": "RHBZ#2450505",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450505"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-29111",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-29111"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-29111",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29111"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/1d22f706bd04f45f8422e17fbde3f56ece17758a",
"url": "https://github.com/systemd/systemd/commit/1d22f706bd04f45f8422e17fbde3f56ece17758a"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/20021e7686426052e3a7505425d7e12085feb2a6",
"url": "https://github.com/systemd/systemd/commit/20021e7686426052e3a7505425d7e12085feb2a6"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/21167006574d6b83813c7596759b474f56562412",
"url": "https://github.com/systemd/systemd/commit/21167006574d6b83813c7596759b474f56562412"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/3cee294fe8cf4fa0eff933ab21416d099942cabd",
"url": "https://github.com/systemd/systemd/commit/3cee294fe8cf4fa0eff933ab21416d099942cabd"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/42aee39107fbdd7db1ccd402a2151822b2805e9f",
"url": "https://github.com/systemd/systemd/commit/42aee39107fbdd7db1ccd402a2151822b2805e9f"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/54588d2dedff54bfb6036670820650e4ea74628f",
"url": "https://github.com/systemd/systemd/commit/54588d2dedff54bfb6036670820650e4ea74628f"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/7ac3220213690e8a8d6d2a6e81e43bd1dce01d69",
"url": "https://github.com/systemd/systemd/commit/7ac3220213690e8a8d6d2a6e81e43bd1dce01d69"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/80acea4ef80a4bb78560ed970c34952299b890d6",
"url": "https://github.com/systemd/systemd/commit/80acea4ef80a4bb78560ed970c34952299b890d6"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/b5fd14693057e5f2c9b4a49603be64ec3608ff6c",
"url": "https://github.com/systemd/systemd/commit/b5fd14693057e5f2c9b4a49603be64ec3608ff6c"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/commit/efa6ba2ab625aaa160ac435a09e6482fc63bdbe8",
"url": "https://github.com/systemd/systemd/commit/efa6ba2ab625aaa160ac435a09e6482fc63bdbe8"
},
{
"category": "external",
"summary": "https://github.com/systemd/systemd/security/advisories/GHSA-gx6q-6f99-m764",
"url": "https://github.com/systemd/systemd/security/advisories/GHSA-gx6q-6f99-m764"
}
],
"release_date": "2026-03-23T21:03:56.120000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "systemd: systemd: Arbitrary code execution or Denial of Service via spurious IPC API call data"
},
{
"cve": "CVE-2026-33845",
"cwe": {
"id": "CWE-191",
"name": "Integer Underflow (Wrap or Wraparound)"
},
"discovery_date": "2026-03-24T05:35:59.740000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2450624"
}
],
"notes": [
{
"category": "description",
"text": "A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue marked as Important severity due to its remote, pre-authentication reachability and its impact on a critical DTLS handshake parsing path. The vulnerability can be triggered by an unauthenticated attacker sending crafted DTLS handshake fragments, requiring no prior access or interaction. It leads to an out-of-bounds read caused by an integer underflow in fragment reassembly, operating entirely on attacker-controlled input. Such flaws in low-level protocol parsing are particularly serious, as they may result in disclosure of sensitive process memory, including cryptographic or session-related data, and can also cause reliable application crashes leading to denial of service. Given that DTLS is commonly used in network-facing services such as VPNs and real-time communication systems, the exposure surface is broad. The combination of unauthenticated remote exploitation, memory safety violation, and potential confidentiality and availability impact justifies classifying this issue as high severity rather than moderate.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-33845"
},
{
"category": "external",
"summary": "RHBZ#2450624",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450624"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-33845",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33845"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33845",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33845"
}
],
"release_date": "2026-04-30T17:28:41.473000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment"
},
{
"cve": "CVE-2026-33846",
"cwe": {
"id": "CWE-130",
"name": "Improper Handling of Length Parameter Inconsistency"
},
"discovery_date": "2026-03-24T05:38:09.899000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2450625"
}
],
"notes": [
{
"category": "description",
"text": "A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the message_length field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting message_length values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability should be classified as an important flaw rather than moderate because it exposes a pre-authentication, remotely reachable heap buffer overflow in the DTLS handshake processing path, which is part of the core protocol handling logic and commonly exposed in network-facing services. The flaw enables an attacker to inject controlled data at attacker-chosen offsets and sizes beyond allocated heap boundaries by exploiting inconsistent message_length handling across fragments, effectively creating a constrained but meaningful heap write primitive. Unlike benign memory safety bugs, this condition is deterministically triggerable with a small number of crafted packets and no environmental dependencies for denial-of-service, and it targets a long-lived parsing state where memory corruption can affect adjacent heap structures. Even if reliable code execution requires additional heap manipulation or layout knowledge, the combination of remote reachability, lack of authentication, controlled memory corruption capability, and trivial crashability significantly elevates the risk profile beyond moderate severity. In real-world deployments, such primitives are often sufficient to enable heap grooming and exploitation chains, particularly in services that repeatedly process attacker-controlled input, making this a materially important security flaw.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-33846"
},
{
"category": "external",
"summary": "RHBZ#2450625",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450625"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-33846",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33846"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33846",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33846"
}
],
"release_date": "2026-05-04T08:53:59.249000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly"
},
{
"cve": "CVE-2026-34982",
"cwe": {
"id": "CWE-78",
"name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
},
"discovery_date": "2026-04-06T16:02:10.004743+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2455400"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Vim. A modeline is used to set specific editor options directly from a text file. However, the `complete`, `guitabtooltip`, `printheader` options and the `mapset` function lack proper security checks, allowing an attacker to bypass restrictions and cause arbitrary OS command execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: arbitrary command execution via modeline sandbox bypass",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "To exploit this vulnerability, an attacker needs to convince a user to open a specially crafted file. The arbitrary OS command execution is restricted to the privileges of the user running Vim, limiting the potential of a full system compromise.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-34982"
},
{
"category": "external",
"summary": "RHBZ#2455400",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455400"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-34982",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-34982"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-34982",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34982"
},
{
"category": "external",
"summary": "http://www.openwall.com/lists/oss-security/2026/04/01/1",
"url": "http://www.openwall.com/lists/oss-security/2026/04/01/1"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/commit/75661a66a1db1e1f3f1245c615",
"url": "https://github.com/vim/vim/commit/75661a66a1db1e1f3f1245c615"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/releases/tag/v9.2.0276",
"url": "https://github.com/vim/vim/releases/tag/v9.2.0276"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-8h6p-m6gr-mpw9",
"url": "https://github.com/vim/vim/security/advisories/GHSA-8h6p-m6gr-mpw9"
}
],
"release_date": "2026-04-06T15:16:48.809000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "To mitigate this issue, disable the modeline support by adding the following command to the Vim configuration file:\n\n~~~\nset nomodeline\n~~~",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "vim: arbitrary command execution via modeline sandbox bypass"
},
{
"cve": "CVE-2026-35177",
"cwe": {
"id": "CWE-22",
"name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
},
"discovery_date": "2026-04-06T19:01:00.182513+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2455542"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Vim\u0027s zip.vim plugin. A local user could be tricked into opening a specially crafted zip archive, which would allow a path traversal bypass. This vulnerability enables an attacker to overwrite arbitrary files on the system, potentially leading to data integrity issues or further system compromise.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: zip.vim: Vim zip.vim plugin: Arbitrary file overwrite via path traversal bypass",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "There\u0027s a flaw in `zip.vim` plugin in Vim, allowing a local attacker to overwrite arbitrary files. A user must be tricked into opening a specially crafted zip archive for exploitation, potentially compromising data integrity or the system. When successfully exploited this vulnerability enables the attacker to overwrite arbitrary files or inject code in sensitive system\u0027s location, the impact of the exploitation depends on the privileges which the `vim` process is being executed. Sensitive or privileges files are only susceptible to be overwritten only if the `vim` process is being executed by a high privileged user.\n\nRed Hat Product Security team has rated this vulnerability as having a impact of MODERATE, this decision was made by the fact the user needs to be tricked to open a maliciously crafted file in order to a successful attack to be performed. Additionally the impact will be limited to files which the user running the `vim` process has write permissions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-35177"
},
{
"category": "external",
"summary": "RHBZ#2455542",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455542"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-35177",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-35177"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-35177",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35177"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-jc86-w7vm-8p24",
"url": "https://github.com/vim/vim/security/advisories/GHSA-jc86-w7vm-8p24"
}
],
"release_date": "2026-04-06T17:54:42.779000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Avoid opening untrusted zip archives with Vim. This operational control prevents the necessary user interaction required to trigger the path traversal vulnerability in the `zip.vim` plugin.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 4.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:L",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "vim: zip.vim: Vim zip.vim plugin: Arbitrary file overwrite via path traversal bypass"
},
{
"cve": "CVE-2026-41035",
"cwe": {
"id": "CWE-805",
"name": "Buffer Access with Incorrect Length Value"
},
"discovery_date": "2026-04-16T08:00:54.200357+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2458898"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in rsync. When rsync is configured to handle extended attributes (using the -X or --xattrs option), a remote attacker can exploit a use-after-free vulnerability. This occurs because the receive_xattr function incorrectly processes an untrusted length value during a sorting operation, leading to memory corruption. Successful exploitation can result in a denial of service, causing the rsync process to crash, and may potentially allow for arbitrary code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "rsync: Rsync: Use-after-free vulnerability in extended attribute handling",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important flaw in rsync that allows a remote attacker to cause a denial of service or potentially execute arbitrary code. The vulnerability is present when rsync is used with extended attributes enabled via the `-X` or `--xattrs` option, which is not a default configuration. Exploitation requires the victim to explicitly enable this feature.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-41035"
},
{
"category": "external",
"summary": "RHBZ#2458898",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458898"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-41035",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-41035"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-41035",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41035"
},
{
"category": "external",
"summary": "https://github.com/RsyncProject/rsync/issues/871",
"url": "https://github.com/RsyncProject/rsync/issues/871"
},
{
"category": "external",
"summary": "https://github.com/RsyncProject/rsync/releases",
"url": "https://github.com/RsyncProject/rsync/releases"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2026/04/16/2",
"url": "https://www.openwall.com/lists/oss-security/2026/04/16/2"
}
],
"release_date": "2026-04-16T06:53:05.237000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "To mitigate this vulnerability, avoid using the -X or --xattrs options with rsync if extended attribute handling is not essential for your operations. Disabling these options prevents the vulnerable code path from being exercised. This may impact functionality that relies on extended attributes.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "rsync: Rsync: Use-after-free vulnerability in extended attribute handling"
},
{
"cve": "CVE-2026-41411",
"cwe": {
"id": "CWE-78",
"name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
},
"discovery_date": "2026-04-24T18:01:49.275019+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2461614"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Vim, an open-source command-line text editor. This command injection vulnerability occurs during tag file processing. A local user could craft a malicious tags file containing backtick syntax in the filename field. When Vim resolves a tag from this file, it executes the embedded command via the system shell, leading to arbitrary code execution with the privileges of the running user.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: Vim: Command injection allows arbitrary code execution via malicious tag files",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-41411"
},
{
"category": "external",
"summary": "RHBZ#2461614",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461614"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-41411",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-41411"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-41411",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41411"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/commit/c78194e41d5a0b05b0ddf383b6679b1503f977fb",
"url": "https://github.com/vim/vim/commit/c78194e41d5a0b05b0ddf383b6679b1503f977fb"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/releases/tag/v9.2.0357",
"url": "https://github.com/vim/vim/releases/tag/v9.2.0357"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-cwgx-gcj7-6qh8",
"url": "https://github.com/vim/vim/security/advisories/GHSA-cwgx-gcj7-6qh8"
}
],
"release_date": "2026-04-24T16:51:39.657000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue involves exercising caution when opening or processing tag files from untrusted sources. Users should avoid loading tag files from unknown or suspicious origins to prevent the execution of arbitrary commands.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "vim: Vim: Command injection allows arbitrary code execution via malicious tag files"
},
{
"acknowledgments": [
{
"names": [
"Joshua Rogers"
],
"organization": "AISLE Research Team"
}
],
"cve": "CVE-2026-42009",
"cwe": {
"id": "CWE-475",
"name": "Undefined Behavior for Input to API"
},
"discovery_date": "2026-05-06T16:32:32.382000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2467279"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The impact for this flaw has been downgraded on Red Hat Enterprise Linux due to the following reason:\n\n- The number of elements passed to the vulnerable function at runtime is known and is at most 6 and the element size is sufficiently small. glibc\u2019s qsort implementation will not exercise the quick sort code path, which would otherwise cause an infloop or out-of-bound write.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-42009"
},
{
"category": "external",
"summary": "RHBZ#2467279",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467279"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-42009",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-42009"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42009",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42009"
},
{
"category": "external",
"summary": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-2",
"url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-2"
}
],
"release_date": "2026-04-29T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability"
},
{
"acknowledgments": [
{
"names": [
"Joshua Rogers"
],
"organization": "AISLE Research Team"
}
],
"cve": "CVE-2026-42010",
"cwe": {
"id": "CWE-170",
"name": "Improper Null Termination"
},
"discovery_date": "2026-05-06T16:57:37.044000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2467289"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest\u2013Shamir\u2013Adleman \u2013 Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gnutls: gnutls: Authentication Bypass via NUL Character in Username",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-42010"
},
{
"category": "external",
"summary": "RHBZ#2467289",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467289"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-42010",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-42010"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42010",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42010"
},
{
"category": "external",
"summary": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-4",
"url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-4"
}
],
"release_date": "2026-04-29T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "gnutls: gnutls: Authentication Bypass via NUL Character in Username"
},
{
"acknowledgments": [
{
"names": [
"Haruto Kimura"
],
"organization": "Stella"
}
],
"cve": "CVE-2026-42011",
"cwe": {
"id": "CWE-295",
"name": "Improper Certificate Validation"
},
"discovery_date": "2026-05-06T19:06:25.319000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2467437"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gnutls: gnutls: Security bypass due to incorrect name constraint handling",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-42011"
},
{
"category": "external",
"summary": "RHBZ#2467437",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467437"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-42011",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-42011"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42011",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42011"
},
{
"category": "external",
"summary": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-6",
"url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-6"
}
],
"release_date": "2026-04-29T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "gnutls: gnutls: Security bypass due to incorrect name constraint handling"
},
{
"acknowledgments": [
{
"names": [
"Haruto Kimura"
],
"organization": "Stella"
},
{
"names": [
"Joshua Rogers"
],
"organization": "AISLE Research Team"
}
],
"cve": "CVE-2026-42013",
"cwe": {
"id": "CWE-295",
"name": "Improper Certificate Validation"
},
"discovery_date": "2026-05-06T19:47:00.134000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2467448"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "gnutls: gnutls: Certificate validation bypass due to oversized Subject Alternative Name",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-42013"
},
{
"category": "external",
"summary": "RHBZ#2467448",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467448"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-42013",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-42013"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42013",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42013"
},
{
"category": "external",
"summary": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-8",
"url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-8"
}
],
"release_date": "2026-04-29T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "gnutls: gnutls: Certificate validation bypass due to oversized Subject Alternative Name"
},
{
"cve": "CVE-2026-43112",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"discovery_date": "2026-05-06T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2467015"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s CIFS (Common Internet File System) client. When the `cifs_sanitize_prepath` function processes specially crafted input, such as an empty string or a string containing only delimiters, it can attempt to read data beyond its allocated memory buffer. This out-of-bounds read can lead to a system crash, resulting in a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "An Important out-of-bounds read flaw in the Linux kernel\u0027s CIFS client can lead to a system crash and denial of service. This vulnerability, present in Red Hat Enterprise Linux 8, 9, and 10, and Red Hat In-Vehicle OS 2, can be triggered by processing specially crafted input to the `cifs_sanitize_prepath` function, potentially disrupting system availability.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-43112"
},
{
"category": "external",
"summary": "RHBZ#2467015",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467015"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-43112",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-43112"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43112",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43112"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026050625-CVE-2026-43112-f37f@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026050625-CVE-2026-43112-f37f@gregkh/T"
}
],
"release_date": "2026-05-06T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath"
},
{
"cve": "CVE-2026-45447",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-05-27T14:17:46+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2481898"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in OpenSSL. When processing a specially crafted PKCS#7 or S/MIME (Secure/Multipurpose Internet Mail Extensions) signed message, a heap use-after-free vulnerability in the PKCS7_verify() function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, leading to incorrect memory deallocation. A remote attacker could exploit this to cause application crashes, memory corruption, or potentially achieve remote code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This High severity heap use-after-free flaw in OpenSSL\u0027s PKCS7_verify() function can be triggered by processing a specially crafted PKCS#7 or S/MIME signed message. This could lead to application crashes, memory corruption, or potentially remote code execution, impacting services that handle such messages. The vulnerability specifically affects applications utilizing OpenSSL PKCS#7 APIs, while those using CMS APIs are not impacted.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-45447"
},
{
"category": "external",
"summary": "RHBZ#2481898",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481898"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-45447",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-45447"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-45447",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45447"
}
],
"release_date": "2026-06-09T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()"
},
{
"cve": "CVE-2026-46483",
"cwe": {
"id": "CWE-78",
"name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
},
"discovery_date": "2026-05-15T16:00:58.827425+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2477915"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Vim. When decompressing .tgz archives, the Vimuntar function builds shell commands using shellescape() without the {special} flag. This allows a specially crafted archive filename to trigger Vim cmdline-special expansion and execute arbitrary commands in the context of the current user.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: command injection when decompressing .tgz archives",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "To exploit this issue, an attacker needs to convince a user to decompress a .tgz archive with a specially crafted filename. Additionally, possible arbitrary command execution is restricted to the context of the user running Vim. These conditions limit the exposure of this vulnerability and the potential of a full system compromise. Due to these reasons, this flaw has been rated with a moderate severity.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-46483"
},
{
"category": "external",
"summary": "RHBZ#2477915",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477915"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-46483",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46483"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46483",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46483"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/commit/3fb5e58fbc63d86a3e65f1a141b0d67af2aa38a1",
"url": "https://github.com/vim/vim/commit/3fb5e58fbc63d86a3e65f1a141b0d67af2aa38a1"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/releases/tag/v9.2.0479",
"url": "https://github.com/vim/vim/releases/tag/v9.2.0479"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-2fpv-9ff7-xg5w",
"url": "https://github.com/vim/vim/security/advisories/GHSA-2fpv-9ff7-xg5w"
}
],
"release_date": "2026-05-15T14:57:31.872000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "To mitigate this vulnerability, do not decompress untrusted .tgz archives with the Vimuntar command. Use \u0027tar -x -z -f\u0027 directly, instead.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "vim: command injection when decompressing .tgz archives"
},
{
"acknowledgments": [
{
"summary": "This issue was discovered by Red Hat."
}
],
"cve": "CVE-2026-48864",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-04-21T23:19:41+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2460425"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libsolv: Heap buffer overflow in libsolv repopagestore via unchecked decompression of malicious .solv page data",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This heap buffer overflow in libsolv\u0027s page decompression logic can lead to out-of-bounds reads and writes when processing specially crafted `.solv` files. Exploitation requires a victim application to ingest malicious repository metadata, limiting the attack vector to scenarios involving user interaction or untrusted content sources. Given the user interaction needed, Red Hat Product Security has rated this vulnerability as having a impact of Moderate.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-48864"
},
{
"category": "external",
"summary": "RHBZ#2460425",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460425"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-48864",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-48864"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-48864",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48864"
}
],
"release_date": "2026-05-26T16:07:55.363000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-03T12:01:51+00:00",
"details": "For OpenShift Container Platform 4.12 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n The sha value for the release is as follows:\n\n (For x86_64 architecture)\n The image digest is\nsha256:610f344ba2a621c2205f79032b10cf06865ee89d2ad8250e96a8d83b4d49f310\n\nAll OpenShift Container Platform 4.12 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:59831"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"8Base-RHOSE-4.12:rhcos-x86_64-412.86.202608241157-0"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "libsolv: Heap buffer overflow in libsolv repopagestore via unchecked decompression of malicious .solv page data"
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.