UBUNTU-CVE-2023-6817

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    UBUNTU-CVE-2023-6817

    Published: 18 Dec 2023Last Modified: 30 Sept 2026
    Upstream:
    CVE-2023-6817
    Aliases:
    USN-6606-1
    USN-6607-1
    USN-6608-1

    Summary:

    Details: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free. We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.

    References: https://ubuntu.com/security/CVE-2023-6817, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a, https://kernel.dance/#317eb9685095678f2c9f5a8189de698c5354316a, https://www.openwall.com/lists/oss-security/2023/12/22/6, https://ubuntu.com/security/notices/USN-6606-1, https://ubuntu.com/security/notices/USN-6607-1, https://ubuntu.com/security/notices/USN-6608-1, https://ubuntu.com/security/notices/USN-6609-1, https://ubuntu.com/security/notices/USN-6609-2, https://ubuntu.com/security/notices/USN-6609-3, https://ubuntu.com/security/notices/USN-6628-1, https://ubuntu.com/security/notices/USN-6608-2, https://ubuntu.com/security/notices/USN-6635-1, https://ubuntu.com/security/notices/USN-6628-2, https://www.cve.org/CVERecord?id=CVE-2023-6817

    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-2023-6817 | CVE-DB