rhsa-2024_0593
Vulnerability from csaf_redhat
Published
2024-01-30 13:13
Modified
2024-11-15 17:42
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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            text: "An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions.\n\nRed 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.",
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            text: "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.\n\nSecurity Fix(es):\n\n* kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe (CVE-2023-2163)\n\n* kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags (CVE-2023-3812)\n\n* kernel: use after free in unix_stream_sendpage (CVE-2023-4622)\n\n* kernel: net/sched: sch_hfsc UAF (CVE-2023-4623)\n\n* kernel: use-after-free in sch_qfq network scheduler (CVE-2023-4921)\n\n* kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)\n\n* kernel: IGB driver inadequate buffer size for frames larger than MTU (CVE-2023-45871)\n\nFor 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.",
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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",
            },
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               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's status, and are included for informational purposes to better understand the severity of this vulnerability.",
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               category: "self",
               summary: "Canonical URL",
               url: "https://access.redhat.com/security/cve/CVE-2023-2163",
            },
            {
               category: "external",
               summary: "RHBZ#2240249",
               url: "https://bugzilla.redhat.com/show_bug.cgi?id=2240249",
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               category: "external",
               summary: "https://www.cve.org/CVERecord?id=CVE-2023-2163",
               url: "https://www.cve.org/CVERecord?id=CVE-2023-2163",
            },
            {
               category: "external",
               summary: "https://nvd.nist.gov/vuln/detail/CVE-2023-2163",
               url: "https://nvd.nist.gov/vuln/detail/CVE-2023-2163",
            },
            {
               category: "external",
               summary: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fed",
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         release_date: "2023-04-19T00:00:00+00:00",
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               date: "2024-01-30T13:13:58+00:00",
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         cve: "CVE-2023-3812",
         cwe: {
            id: "CWE-787",
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         ids: [
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               category: "description",
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               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's status, and are included for informational purposes to better understand the severity of this vulnerability.",
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               title: "Vulnerability description",
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               text: "kernel: use after free in unix_stream_sendpage",
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               text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
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               text: "A use-after-free flaw was found in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component that can be exploited to achieve local privilege escalation. If a class with a link-sharing curve, for example, with the HFSC_FSC flag set, has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free issue.",
               title: "Vulnerability description",
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               text: "kernel: net/sched: sch_hfsc UAF",
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               text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
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               text: "kernel: use-after-free in sch_qfq network scheduler",
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               title: "Vulnerability description",
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               text: "kernel: netfilter: potential slab-out-of-bound access due to integer underflow",
               title: "Vulnerability summary",
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               title: "Vulnerability description",
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            {
               category: "summary",
               text: "kernel: IGB driver inadequate buffer size for frames larger than MTU",
               title: "Vulnerability summary",
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            },
         ],
         threats: [
            {
               category: "impact",
               details: "Important",
            },
         ],
         title: "kernel: IGB driver inadequate buffer size for frames larger than MTU",
      },
   ],
}


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