UBUNTU-CVE-2021-36976

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    UBUNTU-CVE-2021-36976

    Published: 20 Jul 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-36976
    Aliases:
    USN-5291-1

    Summary:

    Details: libarchive 3.4.1 through 3.5.1 has a use-after-free in copy_string (called from do_uncompress_block and process_block).

    References: https://ubuntu.com/security/CVE-2021-36976, https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libarchive/OSV-2021-557.yaml, https://ubuntu.com/security/notices/USN-5291-1, https://www.cve.org/CVERecord?id=CVE-2021-36976

    Affected packages

    Package

    Name: libarchive

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.4.0-2ubuntu1.1

    Affected versions

    3.4.0-1
    3.4.0-1build1
    3.4.0-1ubuntu2
    3.4.0-2ubuntu1

    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
    UBUNTU-CVE-2021-36976 | CVE-DB