UBUNTU-CVE-2023-5633

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    UBUNTU-CVE-2023-5633

    Published: 23 Oct 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2023-5633
    Aliases:
    USN-6503-1
    USN-6537-1
    USN-6572-1

    Summary:

    Details: The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a surface. When running inside a VMware guest with 3D acceleration enabled, a local, unprivileged user could potentially use this flaw to escalate their privileges.

    References: https://ubuntu.com/security/CVE-2023-5633, https://access.redhat.com/security/cve/CVE-2023-5633, https://github.com/torvalds/linux/commit/91398b413d03660fd5828f7b4abc64e884b98069, https://lists.freedesktop.org/archives/dri-devel/2023-September/424805.html, https://ubuntu.com/security/notices/USN-6503-1, https://ubuntu.com/security/notices/USN-6537-1, https://ubuntu.com/security/notices/USN-6572-1, https://ubuntu.com/security/notices/USN-6688-1, https://www.cve.org/CVERecord?id=CVE-2023-5633

    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-2023-5633 | CVE-DB