UBUNTU-CVE-2023-3389

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    UBUNTU-CVE-2023-3389

    Published: 28 Jun 2023Last Modified: 9 Sept 2026
    Upstream:
    CVE-2023-3389
    Aliases:
    USN-6246-1
    USN-6248-1
    USN-6249-1

    Summary:

    Details: A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).

    References: https://ubuntu.com/security/CVE-2023-3389, https://git.kernel.org/linus/9ca9fb24d5febccea354089c41f96a8ad0d853f8, https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=0e388fce7aec40992eadee654193cad345d62663, https://kernel.dance/4716c73b188566865bdd79c3a6709696a224ac04, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=4716c73b188566865bdd79c3a6709696a224ac04, https://kernel.dance/ef7dfac51d8ed961b742218f526bd589f3900a59, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef7dfac51d8ed961b742218f526bd589f3900a59, https://ubuntu.com/security/notices/USN-6246-1, https://ubuntu.com/security/notices/USN-6248-1, https://ubuntu.com/security/notices/USN-6249-1, https://ubuntu.com/security/notices/USN-6250-1, https://ubuntu.com/security/notices/USN-6255-1, https://ubuntu.com/security/notices/USN-6260-1, https://www.cve.org/CVERecord?id=CVE-2023-3389

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/linux-hwe-edge?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-2023-3389 | CVE-DB