USN-5078-3

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    USN-5078-3

    Published: 13 Oct 2021Last Modified: 10 Feb 2026

    Summary: squashfs-tools vulnerability

    Details: USN-5078-1 fixed a vulnerability in Squashfs-Tools. That update was incomplete and could still result in Squashfs-Tools mishandling certain malformed SQUASHFS files. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Richard Weinberger discovered that Squashfs-Tools mishandled certain malformed SQUASHFS files. An attacker could use this vulnerability to write arbitrary files to the filesystem.

    References: https://ubuntu.com/security/notices/USN-5078-3, https://ubuntu.com/security/CVE-2021-41072

    Affected packages

    Package

    Name: squashfs-tools

    Purl: pkg:deb/ubuntu/squashfs-tools@1:4.4-1ubuntu0.3?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:4.4-1ubuntu0.3

    Affected versions

    1:4.4-1

    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
    USN-5078-3 | CVE-DB