UBUNTU-CVE-2023-3773

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    UBUNTU-CVE-2023-3773

    Published: 25 Jul 2023Last Modified: 9 Sept 2026
    Upstream:
    CVE-2023-3773
    Aliases:
    USN-6415-1
    USN-6534-1
    USN-6534-2

    Summary:

    Details: A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to cause a 4 byte out-of-bounds read of XFRMA_MTIMER_THRESH when parsing netlink attributes, leading to potential leakage of sensitive heap data to userspace.

    References: https://ubuntu.com/security/CVE-2023-3773, https://lore.kernel.org/all/[email protected]/T/#u, https://access.redhat.com/security/cve/CVE-2023-3773, https://ubuntu.com/security/notices/USN-6415-1, https://ubuntu.com/security/notices/USN-6534-1, https://ubuntu.com/security/notices/USN-6549-1, https://ubuntu.com/security/notices/USN-6534-2, https://ubuntu.com/security/notices/USN-6549-2, https://ubuntu.com/security/notices/USN-6534-3, https://ubuntu.com/security/notices/USN-6549-3, https://ubuntu.com/security/notices/USN-6549-4, https://ubuntu.com/security/notices/USN-6549-5, https://www.cve.org/CVERecord?id=CVE-2023-3773

    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-2023-3773 | CVE-DB