CVE-2026-80820

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    CVE-2026-80820

    Published: 4 Sept 2026Last Modified: 6 Sept 2026

    Summary: xfs: don't livelock in scrub on a circular unlinked list

    Details: In the Linux kernel, the following vulnerability has been resolved: xfs: don't livelock in scrub on a circular unlinked list LOLLM points out that online fsck can livelock if an unlinked inode list contains a loop. Use a bitmap to detect cycles.

    References: https://git.kernel.org/stable/c/159d162fe80bd56573cafde5801bd5a90a3dd1ac, https://git.kernel.org/stable/c/527eaaefddb6ec5c83a06c9a1559960dd6361753, https://git.kernel.org/stable/c/56407a61a8bb85b884de802d39635abdb0ea7408, https://git.kernel.org/stable/c/599453f83458b57995290a1d31200c263e2c2691, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80820.json, https://nvd.nist.gov/vuln/detail/CVE-2026-80820, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- a12890aebb895951720ff884eab1c99a30645b29
    Fixed -599453f83458b57995290a1d31200c263e2c2691

    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-2026-80820 | CVE-DB