rhsa-2024_1253
Vulnerability from csaf_redhat
Published
2024-03-12 01:04
Modified
2024-11-06 05:13
Summary
Red Hat Security Advisory: kernel live patch module security update
Notes
Topic
An update for kpatch-patch-5_14_0-70_64_1, kpatch-patch-5_14_0-70_70_1, kpatch-patch-5_14_0-70_75_1, kpatch-patch-5_14_0-70_80_1, and kpatch-patch-5_14_0-70_85_1 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe (CVE-2023-2163)
* kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
* kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)
* kernel: use after free in unix_stream_sendpage (CVE-2023-4622)
* kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination (CVE-2024-0646)
* kernel: GSM multiplexing race condition leads to privilege escalation (CVE-2023-6546)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe"
},
{
"acknowledgments": [
{
"names": [
"Alagu M"
],
"organization": "Salesforce Offensive Security team"
}
],
"cve": "CVE-2023-3390",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"discovery_date": "2023-06-06T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2213260"
}
],
"notes": [
{
"category": "description",
"text": "A use-after-free flaw was found in the Netfilter subsystem of the Linux kernel when processing named and anonymous sets in batch requests, which can lead to performing arbitrary reads and writes in kernel memory. This flaw allows a local user with CAP_NET_ADMIN capability to crash or potentially escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Only local users with `CAP_NET_ADMIN` capability or root can trigger this issue. \nOn Red Hat Enterprise Linux, local unprivileged users can exploit unprivileged user namespaces (CONFIG_USER_NS) to grant themselves this capability.\n\nThe OpenShift Container Platform (OCP) control planes or master machines are based on Red Hat Enterprise Linux CoreOS (RHCOS) that consists primarily of RHEL components, therefore, it is also affected by this kernel vulnerability. A successful exploit needs necessary privileges (CAP_NET_ADMIN) and direct, local access. A local user in RHCOS is already a root with full permissions, hence existence of this vulnerability does not bring any value from the potential attacker perspective. From the OpenShift containers perspective, this vulnerability cannot be exploited as in OpenShift the cluster processes on the node are namespaced, which means that switching the namespace in the running OpenShift container will not bring necessary capabilities.\nThis means that for OpenShift, the impact of this vulnerability is Low.\n\nSimilar to the CVE-2023-32233 vulnerability, this has been explained in the following blog post as an example of a \"Container escape vulnerability\":\nhttps://www.redhat.com/en/blog/containers-vulnerability-risk-assessment",
"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": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-3390"
},
{
"category": "external",
"summary": "RHBZ#2213260",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2213260"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-3390",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-3390"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-3390",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3390"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1240eb93f0616b21c675416516ff3d74798fdc97",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1240eb93f0616b21c675416516ff3d74798fdc97"
}
],
"release_date": "2023-06-08T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2024-03-12T01:04:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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{
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"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",
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{
"cve": "CVE-2023-3609",
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"id": "CWE-415",
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"ids": [
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{
"category": "description",
"text": "A double-free flaw was found in u32_set_parms in net/sched/cls_u32.c in the Network Scheduler component in the Linux kernel. This flaw allows a local attacker to use a failure event to mishandle the reference counter, leading to a local privilege escalation threat.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails",
"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"
}
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{
"category": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2225201"
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{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2023-3609"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-3609",
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},
{
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"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc",
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"category": "vendor_fix",
"date": "2024-03-12T01:04:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"integrityImpact": "HIGH",
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"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"category": "impact",
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"title": "kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails"
},
{
"cve": "CVE-2023-4622",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
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"discovery_date": "2023-09-06T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2237760"
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],
"notes": [
{
"category": "description",
"text": "A use-after-free flaw was found in the Linux kernel\u0027s af_unix component that allows local privilege escalation. The unix_stream_sendpage() function tries to add data to the last skb in the peer\u0027s recv queue without locking the queue. This issue leads to a race condition where the unix_stream_sendpage() function could access a skb that is being released by garbage collection, resulting in a use-after-free issue.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: use after free in unix_stream_sendpage",
"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"
}
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"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-4622"
},
{
"category": "external",
"summary": "RHBZ#2237760",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2237760"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-4622",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-4622"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-4622",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4622"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y\u0026id=790c2f9d15b594350ae9bca7b236f2b1859de02c",
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"date": "2024-03-12T01:04:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"attackVector": "LOCAL",
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"baseScore": 6.6,
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"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
"version": "3.1"
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"title": "kernel: use after free in unix_stream_sendpage"
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{
"cve": "CVE-2023-6546",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
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"ids": [
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"text": "2255498"
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],
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{
"category": "description",
"text": "A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: GSM multiplexing race condition leads to privilege escalation",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is critical because it can be exploited to escalate privileges, directly threatening system security. Despite requiring local access and having a high attack complexity, the potential to severely impact confidentiality, integrity, and availability justifies its \"Important\" rating.",
"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"
}
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{
"category": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255498"
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{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2023-6546"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-6546",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6546"
},
{
"category": "external",
"summary": "https://github.com/torvalds/linux/commit/3c4f8333b582487a2d1e02171f1465531cde53e3",
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{
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"summary": "https://www.zerodayinitiative.com/advisories/ZDI-CAN-20527",
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"release_date": "2023-12-21T00:00:00+00:00",
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"date": "2024-03-12T01:04:27+00:00",
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{
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"id": "CWE-1314",
"name": "Missing Write Protection for Parametric Data Values"
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"text": "An out-of-bounds memory write flaw was found in the Linux kernel\u2019s Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination",
"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"
}
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"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"
},
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],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination"
}
]
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.