rhsa-2024_4970
Vulnerability from csaf_redhat
Published
2024-08-01 07:52
Modified
2024-11-06 06:34
Summary
Red Hat Security Advisory: kpatch-patch-4_18_0-305_120_1 security update

Notes

Topic
An update for kpatch-patch-4_18_0-305_120_1 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 can be loaded by the kpatch command line utility to modify the code of a running kernel. This patch module is targeted for kernel-4.18.0-305.120.1.el8_4. Security Fix(es): * kernel: GSM multiplexing race condition leads to privilege escalation (CVE-2023-6546,ZDI-CAN-20527) 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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  "vulnerabilities": [
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      "cwe": {
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        "name": "Use After Free"
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      "discovery_date": "2023-12-18T00:00:00+00:00",
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          "text": "2255498"
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          "category": "description",
          "text": "A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.",
          "title": "Vulnerability description"
        },
        {
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          "text": "kernel: GSM multiplexing race condition leads to privilege escalation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is critical because it can be exploited to escalate privileges, directly threatening system security. Despite requiring local access and having a high attack complexity, the potential to severely impact confidentiality, integrity, and availability justifies its \"Important\" rating.",
          "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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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-6546",
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          "url": "https://www.zerodayinitiative.com/advisories/ZDI-CAN-20527"
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      "release_date": "2023-12-21T00:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2024-08-01T07:52:55+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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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "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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            "BaseOS-8.4.0.Z.E4S:kpatch-patch-4_18_0-305_120_1-debugsource-0:1-3.el8_4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: GSM multiplexing race condition leads to privilege escalation"
    }
  ]
}


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