UBUNTU-CVE-2023-42755

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    UBUNTU-CVE-2023-42755

    Published: 5 Oct 2023Last Modified: 9 Sept 2026
    Upstream:
    CVE-2023-42755
    Aliases:
    USN-6439-1
    USN-6439-2
    USN-6440-1

    Summary:

    Details: A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.

    References: https://ubuntu.com/security/CVE-2023-42755, https://lore.kernel.org/all/CADW8OBtkAf+nGokhD9zCFcmiebL1SM8bJp_oo=pE02BknG9qnQ@mail.gmail.com/, https://git.kernel.org/linus/265b4da82dbf5df04bee5a5d46b7474b1aaf326a, https://seclists.org/oss-sec/2023/q3/229, https://ubuntu.com/security/notices/USN-6439-1, https://ubuntu.com/security/notices/USN-6440-1, https://ubuntu.com/security/notices/USN-6441-1, https://ubuntu.com/security/notices/USN-6442-1, https://ubuntu.com/security/notices/USN-6443-1, https://ubuntu.com/security/notices/USN-6444-1, https://ubuntu.com/security/notices/USN-6445-1, https://ubuntu.com/security/notices/USN-6446-1, https://ubuntu.com/security/notices/USN-6440-2, https://ubuntu.com/security/notices/USN-6439-2, https://ubuntu.com/security/notices/USN-6441-2, https://ubuntu.com/security/notices/USN-6444-2, https://ubuntu.com/security/notices/USN-6445-2, https://ubuntu.com/security/notices/USN-6446-2, https://ubuntu.com/security/notices/USN-6440-3, https://ubuntu.com/security/notices/USN-6446-3, https://ubuntu.com/security/notices/USN-6441-3, https://ubuntu.com/security/notices/USN-6460-1, https://ubuntu.com/security/notices/USN-6466-1, https://www.cve.org/CVERecord?id=CVE-2023-42755

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-194.245

    Affected versions

    3.11.0-12.19

    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-2023-42755 | CVE-DB