rhsa-2023_5775
Vulnerability from csaf_redhat
Published
2023-10-17 09:27
Modified
2024-11-06 03:55
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: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)
* kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)
* kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128)
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": "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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},
"url": "https://access.redhat.com/errata/RHSA-2023:5775"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent module cls_u32 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.",
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"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",
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails"
},
{
"cve": "CVE-2023-3776",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"discovery_date": "2023-07-24T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2225097"
}
],
"notes": [
{
"category": "description",
"text": "A use-after-free vulnerability was found in fw_set_parms in net/sched/cls_fw.c in network scheduler sub-component in the Linux Kernel. This issue occurs due to a missing sanity check during cleanup at the time of failure, leading to a misleading reference. This may allow a local attacker to gain local privilege escalation.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function",
"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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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-3776"
},
{
"category": "external",
"summary": "RHBZ#2225097",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2225097"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-3776",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-3776"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-3776",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3776"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f"
}
],
"release_date": "2023-07-06T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2023-10-17T09:27:38+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-2023:5775"
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"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: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function"
},
{
"cve": "CVE-2023-4128",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"discovery_date": "2023-07-24T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2261965"
}
],
"notes": [
{
"category": "description",
"text": "This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route",
"title": "Vulnerability summary"
},
{
"category": "other",
"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.",
"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": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-4128"
},
{
"category": "external",
"summary": "RHBZ#2261965",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2261965"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-4128",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-4128"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-4128",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4128"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2023-4206",
"url": "https://access.redhat.com/security/cve/CVE-2023-4206"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2023-4207",
"url": "https://access.redhat.com/security/cve/CVE-2023-4207"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2023-4208",
"url": "https://access.redhat.com/security/cve/CVE-2023-4208"
}
],
"release_date": "2023-07-29T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2023-10-17T09:27:38+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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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route"
}
]
}
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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.