{"id":"CVE-2023-3777","revision":"9c01648c3790477e9bb843cd0c99b7d5","records":[{"revision":"9c01648c3790477e9bb843cd0c99b7d5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-3777","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\nWhen nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.\n\nWe recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.","state":0,"publishedAt":"2023-09-06T13:50:26.344+00:00","modifiedAt":"2026-10-14T21:13:45.609+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\": \"5.9\",\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=6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8","https://kernel.dance/6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8","https://www.debian.org/security/2023/dsa-5492","http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html","http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-3777","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-3777","identifiers":["CVE-2023-3777"]},"retained":false,"historicalAffected":[]}],"coverage":[]}