CVE-2023-6817

    Dashboard / Vulnerabilities / CVE-2023-6817

    CVE-2023-6817

    Published: 18 Dec 2023Last Modified: 12 Aug 2026

    Summary: Use-after-free in Linux kernel's netfilter: nf_tables component

    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: http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html, http://www.openwall.com/lists/oss-security/2023/12/22/13, http://www.openwall.com/lists/oss-security/2023/12/22/6, https://cert-portal.siemens.com/productcert/html/ssa-265688.html, https://cert-portal.siemens.com/productcert/html/ssa-398330.html, https://git.kernel.org, https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a, https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6817.json, https://nvd.nist.gov/vuln/detail/CVE-2023-6817, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 7111951b8d4973bda27ff663f2cf18b663d15b48
    Fixed -0dd3ee31125508cd67f7e7172247f05b7fd1753a

    Affected versions

    v6.7-rc1

    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
    CVE-2023-6817 | CVE-DB