rhsa-2024_5522
Vulnerability from csaf_redhat
Published
2024-08-20 09:09
Modified
2024-11-15 18:40
Summary
Red Hat Security Advisory: kpatch-patch-4_18_0-553 security update

Notes

Topic
An update for kpatch-patch-4_18_0-553 is now available for Red Hat Enterprise Linux 8. 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 can be loaded by the kpatch command line utility to modify the code of a running kernel. This patch module is targeted for kernel-4.18.0-553.el8_10. Security Fix(es): * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886) * kernel: net: UAF in network route management (CVE-2024-36971) 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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      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2024-06-06T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2277238"
        }
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      "notes": [
        {
          "category": "description",
          "text": "A use-after-free (UAF) flaw exists in the Linux Kernel within the reassembly of fragmented TIPC messages, specifically in the tipc_buf_append() function. The issue results due to a lack of checks in the error handling cleanup and can trigger a UAF on \"struct sk_buff\", which may lead to remote code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: TIPC message reassembly use-after-free remote code execution vulnerability",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "While the TIPC module is not loaded by default, this flaw might be used as one in a series of attacks. For that reason, and because of the possibility of remote code execution on systems where this module has been loaded, Red Hat assesses the impact of this flaw as Important.",
          "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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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2277238"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2024-36886",
          "url": "https://www.cve.org/CVERecord?id=CVE-2024-36886"
        },
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-36886",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-36886"
        },
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          "summary": "https://lore.kernel.org/all/752f1ccf762223d109845365d07f55414058e5a3.1714484273.git.pabeni@redhat.com/",
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          "summary": "https://lore.kernel.org/linux-cve-announce/2024053033-CVE-2024-36886-dd83@gregkh/T/#u",
          "url": "https://lore.kernel.org/linux-cve-announce/2024053033-CVE-2024-36886-dd83@gregkh/T/#u"
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      "release_date": "2024-06-06T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-08-20T09:09:52+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-2024:5522"
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        {
          "category": "workaround",
          "details": "The TIPC module is not automatically loaded in default configurations. When required, administrative privileges are required to explicitly load this module.\nTo determine if the TIPC module is loaded, use the following command:\n# grep tipc /proc/modules\nLook for output similar to the following:\ntipc 479232 0 - Live 0xffffffffc1ba5000\nip6_udp_tunnel 16384 1 tipc, Live 0xffffffffc1b9b000\nudp_tunnel 32768 1 tipc, Live 0xffffffffc1b8b000\n\nLoading the module can be prevented with the following instructions:\n# echo \"install tipc /bin/true\" \u003e\u003e /etc/modprobe.d/disable-tipc.conf\nThe system will need to be restarted if the module is loaded. In most circumstances, the TIPC kernel module will be unable to be unloaded while any network interfaces are active and the protocol is in use.\n\nIf the system requires this module to work correctly, this mitigation may not be suitable.",
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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      "cve": "CVE-2024-36971",
      "discovery_date": "2024-06-10T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2292331"
        }
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        {
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          "text": "A use-after-free flaw was found in the Linux kernel\u0027s network route management. This flaw allows an attacker to alter the behavior of certain network connections.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: net: kernel: UAF in network route management",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Environments which use third-party KABI modules may experience kernel crashes after applying errata for CVE-2024-36971. Contact your module vendor about an update. Until these third party modules can be fixed, you can prevent crashes by disabling them. This problem stems from modules which use the `negative_advice()` function.",
          "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-2024-36971"
        },
        {
          "category": "external",
          "summary": "RHBZ#2292331",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2292331"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2024-36971",
          "url": "https://www.cve.org/CVERecord?id=CVE-2024-36971"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-36971",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-36971"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/20240610090330.1347021-2-lee@kernel.org/T",
          "url": "https://lore.kernel.org/linux-cve-announce/20240610090330.1347021-2-lee@kernel.org/T"
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        {
          "category": "external",
          "summary": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
          "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
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      "release_date": "2024-06-10T00:00:00+00:00",
      "remediations": [
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          "date": "2024-08-20T09:09:52+00:00",
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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2024:5522"
        },
        {
          "category": "workaround",
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          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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          "category": "exploit_status",
          "date": "2024-08-07T00:00:00+00:00",
          "details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
        },
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: net: kernel: UAF in network route management"
    }
  ]
}


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