UBUNTU-CVE-2023-2430

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    UBUNTU-CVE-2023-2430

    Published: 8 May 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2023-2430

    Summary:

    Details: A vulnerability was found due to missing lock for IOPOLL flaw in io_cqring_event_overflow() in io_uring.c in Linux Kernel. This flaw allows a local attacker with user privilege to trigger a Denial of Service threat.

    References: https://ubuntu.com/security/CVE-2023-2430, https://git.kernel.org/linus/e12d7a46f65ae4b7d58a5e0c1cbfa825cf8d830d, https://groups.google.com/g/syzkaller/c/T04q4HMUCdA/m/qVaOqv2RAAAJ?pli=1, https://lore.kernel.org/io-uring/Y8krlYa52%[email protected]/, https://ubuntu.com/security/notices/USN-6192-1, https://ubuntu.com/security/notices/USN-6194-1, https://ubuntu.com/security/notices/USN-6235-1, https://www.cve.org/CVERecord?id=CVE-2023-2430

    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-2023-2430 | CVE-DB