UBUNTU-CVE-2023-32257

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    UBUNTU-CVE-2023-32257

    Published: 24 Jul 2023Last Modified: 9 Sept 2026
    Upstream:
    CVE-2023-32257
    Aliases:
    USN-6338-1
    USN-6338-2
    USN-6344-1

    Summary:

    Details: A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_SESSION_SETUP and SMB2_LOGOFF commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.

    References: https://ubuntu.com/security/CVE-2023-32257, https://access.redhat.com/security/cve/CVE-2023-32257, https://www.zerodayinitiative.com/advisories/ZDI-CAN-20596/, https://ubuntu.com/security/notices/USN-6338-1, https://ubuntu.com/security/notices/USN-6344-1, https://ubuntu.com/security/notices/USN-6338-2, https://ubuntu.com/security/notices/USN-6626-1, https://ubuntu.com/security/notices/USN-6628-1, https://ubuntu.com/security/notices/USN-6626-2, https://ubuntu.com/security/notices/USN-6628-2, https://ubuntu.com/security/notices/USN-6626-3, https://www.cve.org/CVERecord?id=CVE-2023-32257

    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-2023-32257 | CVE-DB