UBUNTU-CVE-2023-38426

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    UBUNTU-CVE-2023-38426

    Published: 18 Jul 2023Last Modified: 9 Sept 2026
    Upstream:
    CVE-2023-38426
    Aliases:
    USN-6338-1
    USN-6338-2
    USN-6339-1

    Summary:

    Details: An issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context's name_len is larger than the tag length.

    References: https://ubuntu.com/security/CVE-2023-38426, https://git.kernel.org/linus/02f76c401d17e409ed45bf7887148fcc22c93c85, https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.4, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/ksmbd?id=02f76c401d17e409ed45bf7887148fcc22c93c85, https://ubuntu.com/security/notices/USN-6338-1, https://ubuntu.com/security/notices/USN-6339-1, https://ubuntu.com/security/notices/USN-6344-1, https://ubuntu.com/security/notices/USN-6350-1, https://ubuntu.com/security/notices/USN-6351-1, https://ubuntu.com/security/notices/USN-6338-2, https://ubuntu.com/security/notices/USN-6339-2, https://ubuntu.com/security/notices/USN-6339-3, https://ubuntu.com/security/notices/USN-6339-4, https://www.cve.org/CVERecord?id=CVE-2023-38426

    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-2023-38426 | CVE-DB