UBUNTU-CVE-2023-40791

    Dashboard / Vulnerabilities / UBUNTU-CVE-2023-40791

    UBUNTU-CVE-2023-40791

    Published: 16 Oct 2023Last Modified: 24 Oct 2025
    Upstream:
    CVE-2023-40791

    Summary:

    Details: extract_user_to_sg in lib/scatterlist.c in the Linux kernel before 6.4.12 fails to unpin pages in a certain situation, as demonstrated by a WARNING for try_grab_page.

    References: https://ubuntu.com/security/CVE-2023-40791, https://git.kernel.org/linus/f443fd5af5dbd531f880d3645d5dd36976cf087f, https://lkml.org/lkml/2023/8/3/323, https://lore.kernel.org/linux-mm/[email protected]/, https://lore.kernel.org/linux-crypto/[email protected]/, https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.12, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f443fd5af5dbd531f880d3645d5dd36976cf087f, https://www.cve.org/CVERecord?id=CVE-2023-40791

    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-2023-40791 | CVE-DB