{"id":"CVE-2023-6817","revision":null,"records":[{"revision":"e21dfcc733764050b28f4b9bb5333d77","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-6817","aliases":[],"title":"Use-after-free in Linux kernel's netfilter: nf_tables component","description":"A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.\n\nThe 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.\n\nWe recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.","state":0,"publishedAt":"2023-12-18T14:37:05.986+00:00","modifiedAt":"2026-10-14T22:15:22.336+00:00","affected":[{"ecosystem":"Vendor product","name":"kernel","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Linux\",\n                    \"product\": \"Kernel\",\n                    \"packageName\": \"kernel\",\n                    \"repo\": \"https://git.kernel.org\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.6\",\n                            \"lessThan\": \"6.7\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a","https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a","http://www.openwall.com/lists/oss-security/2023/12/22/6","http://www.openwall.com/lists/oss-security/2023/12/22/13","https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html","http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-6817","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-6817","identifiers":["CVE-2023-6817"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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