UBUNTU-CVE-2023-4389

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    UBUNTU-CVE-2023-4389

    Published: 16 Aug 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-4389

    Summary:

    Details: A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.

    References: https://ubuntu.com/security/CVE-2023-4389, https://git.kernel.org/linus/168a2f776b9762f4021421008512dd7ab7474df1, https://patchwork.kernel.org/project/linux-btrfs/patch/[email protected]/, https://access.redhat.com/security/cve/CVE-2023-4389, https://www.cve.org/CVERecord?id=CVE-2023-4389

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/[email protected]~16.04.1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    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
    UBUNTU-CVE-2023-4389 | CVE-DB