rhsa-2024_0593
Vulnerability from csaf_redhat
Published
2024-01-30 13:13
Modified
2024-11-06 04:54
Summary
Red Hat Security Advisory: kpatch-patch security update
Notes
Topic
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions.
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: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags (CVE-2023-3812)
* kernel: use after free in unix_stream_sendpage (CVE-2023-4622)
* kernel: net/sched: sch_hfsc UAF (CVE-2023-4623)
* kernel: use-after-free in sch_qfq network scheduler (CVE-2023-4921)
* kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)
* kernel: IGB driver inadequate buffer size for frames larger than MTU (CVE-2023-45871)
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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"name": "Incorrect Calculation"
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"discovery_date": "2023-09-20T00:00:00+00:00",
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"category": "description",
"text": "An incorrect verifier pruning flaw was found in BPF in the Linux Kernel that may lead to unsafe code paths incorrectly marked as safe, resulting in arbitrary read/writes in kernel memory, lateral privilege escalation, and container escape.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The Red Hat Enterprise Linux 9.3 not affected, because the required patch applied before this CVE creation. For the Red Hat Enterprise Linux 9 before version 9.3 required fixes applied too.",
"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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},
{
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"title": "kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe"
},
{
"cve": "CVE-2023-3812",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2023-07-19T00:00:00+00:00",
"ids": [
{
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}
],
"notes": [
{
"category": "description",
"text": "An out-of-bounds memory access flaw was found in the Linux kernel\u2019s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags",
"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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{
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"notes": [
{
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"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"
},
{
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"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.",
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"title": "Vulnerability summary"
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"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.",
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"title": "kernel: net/sched: sch_hfsc UAF"
},
{
"cve": "CVE-2023-4921",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"discovery_date": "2023-10-22T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2245514"
}
],
"notes": [
{
"category": "description",
"text": "A use-after-free flaw was found in qfq_dequeue and agg_dequeue in net/sched/sch_qfq.c in the Traffic Control (QoS) subsystem in the Linux kernel. This issue may allow a local user to crash the system or escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: use-after-free in sch_qfq network scheduler",
"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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{
"cve": "CVE-2023-45871",
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"id": "CWE-120",
"name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
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"text": "2244723"
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{
"category": "description",
"text": "A flaw was found in igb_configure_rx_ring in drivers/net/ethernet/intel/igb/igb_main.c in the IGB driver in the Linux kernel. An overflow of the contents from a packet that is too large will overflow into the kernel\u0027s ring buffer, leading to a system integrity issue.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: IGB driver inadequate buffer size for frames larger than MTU",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw is rated as Important because of its nature of exposure to the threat of impacting Confidentiality, Integrity and Availability by an attacker while being in an adjacent physical layer with no privilege required.",
"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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"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-45871"
},
{
"category": "external",
"summary": "RHBZ#2244723",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2244723"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-45871",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-45871"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-45871",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45871"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bb5ed01cd2428cd25b1c88a3a9cba87055eb289f",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bb5ed01cd2428cd25b1c88a3a9cba87055eb289f"
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"release_date": "2023-08-24T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2024-01-30T13:13:58+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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"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"BaseOS-8.4.0.Z.E4S:kpatch-patch-4_18_0-305_97_1-debugsource-0:1-4.el8_4.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: IGB driver inadequate buffer size for frames larger than MTU"
}
]
}
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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.