CVE-2021-3428

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    CVE-2021-3428

    Published: 4 Mar 2022Last Modified: 14 Mar 2026

    Summary:

    Details: A flaw was found in the Linux kernel. A denial of service problem is identified if an extent tree is corrupted in a crafted ext4 filesystem in fs/ext4/extents.c in ext4_es_cache_extent. Fabricating an integer overflow, A local attacker with a special user privilege may cause a system crash problem which can lead to an availability threat.

    References: https://ubuntu.com/security/CVE-2021-3428, https://www.openwall.com/lists/oss-security/2021/03/17/1, https://bugzilla.redhat.com/show_bug.cgi?id=1972621

    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