UBUNTU-CVE-2024-0443

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    UBUNTU-CVE-2024-0443

    Published: 12 Jan 2024Last Modified: 24 Oct 2025
    Upstream:
    CVE-2024-0443

    Summary:

    Details: A flaw was found in the blkgs destruction path in block/blk-cgroup.c in the Linux kernel, leading to a cgroup blkio memory leakage problem. When a cgroup is being destroyed, cgroup_rstat_flush() is only called at css_release_work_fn(), which is called when the blkcg reference count reaches 0. This circular dependency will prevent blkcg and some blkgs from being freed after they are made offline. This issue may allow an attacker with a local access to cause system instability, such as an out of memory error.

    References: https://ubuntu.com/security/CVE-2024-0443, https://git.kernel.org/linus/20cb1c2fb7568a6054c55defe044311397e01ddb, https://access.redhat.com/security/cve/CVE-2024-0443, https://bugzilla.redhat.com/show_bug.cgi?id=2257968, https://lore.kernel.org/linux-block/[email protected]/, https://www.cve.org/CVERecord?id=CVE-2024-0443

    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-2024-0443 | CVE-DB