UBUNTU-CVE-2023-52631

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    UBUNTU-CVE-2023-52631

    Published: 2 Apr 2024Last Modified: 9 Sept 2026
    Upstream:
    CVE-2023-52631
    Aliases:
    USN-6766-1
    USN-6766-2
    USN-6766-3

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix an NULL dereference bug The issue here is when this is called from ntfs_load_attr_list(). The "size" comes from le32_to_cpu(attr->res.data_size) so it can't overflow on a 64bit systems but on 32bit systems the "+ 1023" can overflow and the result is zero. This means that the kmalloc will succeed by returning the ZERO_SIZE_PTR and then the memcpy() will crash with an Oops on the next line.

    References: https://ubuntu.com/security/CVE-2023-52631, https://git.kernel.org/linus/b2dd7b953c25ffd5912dda17e980e7168bebcf6c, https://git.kernel.org/stable/c/ae4acad41b0f93f1c26cc0fc9135bb79d8282d0b, https://git.kernel.org/stable/c/ec1bedd797588fe38fc11cba26d77bb1d9b194c6, https://git.kernel.org/stable/c/fb7bcd1722bc9bc55160378f5f99c01198fd14a7, https://git.kernel.org/stable/c/686820fe141ea0220fc6fdfc7e5694f915cf64b2, https://git.kernel.org/stable/c/b2dd7b953c25ffd5912dda17e980e7168bebcf6c, https://www.cve.org/CVERecord?id=CVE-2023-52631, https://ubuntu.com/security/notices/USN-6766-1, https://ubuntu.com/security/notices/USN-6766-2, https://ubuntu.com/security/notices/USN-6766-3, https://ubuntu.com/security/notices/USN-6795-1, https://ubuntu.com/security/notices/USN-6828-1, https://ubuntu.com/security/notices/USN-6895-1, https://ubuntu.com/security/notices/USN-6895-2, https://ubuntu.com/security/notices/USN-6900-1, https://ubuntu.com/security/notices/USN-6895-3, https://ubuntu.com/security/notices/USN-6895-4

    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-2023-52631 | CVE-DB