rhsa-2023_5235
Vulnerability from csaf_redhat
Published
2023-09-19 12:42
Modified
2024-11-06 03:43
Summary
Red Hat Security Advisory: kpatch-patch security update
Notes
Topic
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.1 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: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
* kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128)
* kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)
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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"text": "kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route",
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"text": "All CVE users should reference CVE-2023-4206, CVE-2023-4207, CVE-2023-4208 instead of this record. All references and descriptions in this record have been removed to prevent accidental usage.",
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},
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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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{
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"date": "2023-09-19T12:42:34+00:00",
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{
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"ids": [
{
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}
],
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{
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"text": "An out-of-bounds (OOB) memory access flaw was found in the Netfilter module in the Linux kernel\u0027s nft_byteorder_eval in net/netfilter/nft_byteorder.c. A bound check failure allows a local attacker with CAP_NET_ADMIN access to cause a local privilege escalation issue due to incorrect data alignment.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Exploiting this flaw will require the CAP_NET_ADMIN access privilege in any user or network namespace.",
"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.",
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-35001"
},
{
"category": "external",
"summary": "RHBZ#2220892",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2220892"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-35001",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-35001"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-35001",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35001"
},
{
"category": "external",
"summary": "https://lore.kernel.org/netfilter-devel/20230705121515.747251-1-cascardo@canonical.com/T/",
"url": "https://lore.kernel.org/netfilter-devel/20230705121515.747251-1-cascardo@canonical.com/T/"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2023/07/05/3",
"url": "https://www.openwall.com/lists/oss-security/2023/07/05/3"
}
],
"release_date": "2023-07-05T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2023-09-19T12:42:34+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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"url": "https://access.redhat.com/errata/RHSA-2023:5235"
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"category": "workaround",
"details": "To mitigate this issue, it is possible to prevent the affected code from being loaded by blacklisting the kernel netfilter module. \n\nFor instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278",
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"confidentialityImpact": "HIGH",
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"category": "impact",
"details": "Important"
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],
"title": "kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()"
}
]
}
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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.