CVE-2023-52464

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    CVE-2023-52464

    Published: 23 Feb 2024Last Modified: 12 Aug 2026

    Summary: EDAC/thunderx: Fix possible out-of-bounds string access

    Details: In the Linux kernel, the following vulnerability has been resolved: EDAC/thunderx: Fix possible out-of-bounds string access Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat(): drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=] 1136 | strncat(msg, other, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msg, other, OCX_MESSAGE_SIZE); ... 1150 | strncat(msg, other, OCX_MESSAGE_SIZE); ... Apparently the author of this driver expected strncat() to behave the way that strlcat() does, which uses the size of the destination buffer as its third argument rather than the length of the source buffer. The result is that there is no check on the size of the allocated buffer. Change it to strlcat(). [ bp: Trim compiler output, fixup commit message. ]

    References: https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5, https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8, https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6, https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a, https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21, https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601, https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398, https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057, https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html, https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52464.json, https://nvd.nist.gov/vuln/detail/CVE-2023-52464, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 41003396f932d7f027725c7acebb6a7caa41dc3e
    Fixed -71c17ee02538802ceafc830f0736aa35b564e601

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-52464 | CVE-DB