{"id":"CVE-2023-4015","revision":"1f52257fa6874b16a32711eef1b33fa5","records":[{"revision":"1f52257fa6874b16a32711eef1b33fa5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-4015","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\nOn an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used.\n\nWe recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.","state":0,"publishedAt":"2023-09-06T13:52:44.724+00:00","modifiedAt":"2026-10-14T21:23:00.52+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\": \"6.4\",\n                            \"lessThan\": \"6.5\",\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=0a771f7b266b02d262900c75f1e175c7fe76fec2","https://kernel.dance/0a771f7b266b02d262900c75f1e175c7fe76fec2","https://www.debian.org/security/2023/dsa-5492"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-4015","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-4015","identifiers":["CVE-2023-4015"]},"retained":false,"historicalAffected":[]}],"coverage":[]}