CVE-2021-4155

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    CVE-2021-4155

    Published: 24 Aug 2022Last Modified: 16 Apr 2026

    Summary:

    Details: A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.

    References: https://access.redhat.com/security/cve/CVE-2021-4155, https://security-tracker.debian.org/tracker/CVE-2021-4155, https://bugzilla.redhat.com/show_bug.cgi?id=2034813, https://www.openwall.com/lists/oss-security/2022/01/10/1, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    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-2021-4155 | CVE-DB