rhsa-2024_0999
Vulnerability from csaf_redhat
Published
2024-02-27 14:38
Modified
2024-09-13 19:07
Summary
Red Hat Security Advisory: kernel security update
Notes
Topic
An update for kernel is now available for Red Hat Enterprise Linux 7.7 Advanced 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
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)
* 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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"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"
},
{
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"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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"url": "https://access.redhat.com/security/cve/CVE-2023-3609"
},
{
"category": "external",
"summary": "RHBZ#2225201",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2225201"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-3609",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-3609"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-3609",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3609"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc"
}
],
"release_date": "2023-07-21T00:00:00+00:00",
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{
"category": "vendor_fix",
"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\n\nThe system must be rebooted for this update to take effect.",
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"details": "Important"
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"title": "kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails"
},
{
"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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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-4921"
},
{
"category": "external",
"summary": "RHBZ#2245514",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2245514"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-4921",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-4921"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-4921",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4921"
},
{
"category": "external",
"summary": "https://github.com/torvalds/linux/commit/8fc134fee27f2263988ae38920bc03da416b03d8",
"url": "https://github.com/torvalds/linux/commit/8fc134fee27f2263988ae38920bc03da416b03d8"
}
],
"release_date": "2023-09-05T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"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\n\nThe system must be rebooted for this update to take effect.",
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"attackVector": "LOCAL",
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"baseScore": 7.8,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: use-after-free in sch_qfq network scheduler"
},
{
"cve": "CVE-2023-42753",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2023-09-20T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2239843"
}
],
"notes": [
{
"category": "description",
"text": "An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h-\u003enets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: netfilter: potential slab-out-of-bound access due to integer underflow",
"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-2023-42753"
},
{
"category": "external",
"summary": "RHBZ#2239843",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2239843"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-42753",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-42753"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-42753",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42753"
},
{
"category": "external",
"summary": "https://seclists.org/oss-sec/2023/q3/216",
"url": "https://seclists.org/oss-sec/2023/q3/216"
}
],
"release_date": "2023-09-22T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"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\n\nThe system must be rebooted for this update to take effect.",
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
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"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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"category": "impact",
"details": "Important"
}
],
"title": "kernel: netfilter: potential slab-out-of-bound access due to integer underflow"
},
{
"cve": "CVE-2023-45871",
"cwe": {
"id": "CWE-120",
"name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
},
"discovery_date": "2023-10-17T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2244723"
}
],
"notes": [
{
"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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},
"references": [
{
"category": "self",
"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"
}
],
"release_date": "2023-08-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"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\n\nThe system must be rebooted for this update to take effect.",
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"url": "https://access.redhat.com/errata/RHSA-2024:0999"
},
{
"category": "workaround",
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{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"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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"details": "Important"
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],
"title": "kernel: IGB driver inadequate buffer size for frames larger than MTU"
}
]
}
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