UBUNTU-CVE-2023-0386

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    UBUNTU-CVE-2023-0386

    Published: 22 Mar 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-0386
    Aliases:
    USN-6025-1
    USN-6040-1
    USN-6043-1

    Summary:

    Details: A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.

    References: https://ubuntu.com/security/CVE-2023-0386, https://git.kernel.org/linus/4f11ada10d0ad3fd53e2bd67806351de63a4f9c3, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a, https://ubuntu.com/security/notices/USN-6025-1, https://ubuntu.com/security/notices/USN-6040-1, https://ubuntu.com/security/notices/USN-6043-1, https://ubuntu.com/security/notices/USN-6057-1, https://ubuntu.com/security/notices/USN-6071-1, https://ubuntu.com/security/notices/USN-6072-1, https://ubuntu.com/security/notices/USN-6134-1, https://www.cve.org/CVERecord?id=CVE-2023-0386, https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    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-2023-0386 | CVE-DB