{"id":"CVE-2022-49622","revision":"ce7ffd831b2441d296522967fece2dbb","records":[{"revision":"ce7ffd831b2441d296522967fece2dbb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2022-49622","aliases":[],"title":"netfilter: nf_tables: avoid skb access on nf_stolen","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: avoid skb access on nf_stolen\n\nWhen verdict is NF_STOLEN, the skb might have been freed.\n\nWhen tracing is enabled, this can result in a use-after-free:\n1. access to skb->nf_trace\n2. access to skb->mark\n3. computation of trace id\n4. dump of packet payload\n\nTo avoid 1, keep a cached copy of skb->nf_trace in the\ntrace state struct.\nRefresh this copy whenever verdict is != STOLEN.\n\nAvoid 2 by skipping skb->mark access if verdict is STOLEN.\n\n3 is avoided by precomputing the trace id.\n\nOnly dump the packet when verdict is not \"STOLEN\".","state":0,"publishedAt":"2025-02-26T02:23:39.341+00:00","modifiedAt":"2026-08-05T08:55:51.862+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"include/net/netfilter/nf_tables.h\",\n                        \"net/netfilter/nf_tables_core.c\",\n                        \"net/netfilter/nf_tables_trace.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5efa0fc6d7f7930b18801f07cefae8eeacd6ac02\",\n                            \"lessThan\": \"0016d5d46d7440729a3132f61a8da3bf7f84e2ba\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5efa0fc6d7f7930b18801f07cefae8eeacd6ac02\",\n                            \"lessThan\": \"e34b9ed96ce3b06c79bf884009b16961ca478f87\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"include/net/netfilter/nf_tables.h\",\n                        \"net/netfilter/nf_tables_core.c\",\n                        \"net/netfilter/nf_tables_trace.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.18.13\",\n                            \"lessThanOrEqual\": \"5.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.19\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\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/stable/c/0016d5d46d7440729a3132f61a8da3bf7f84e2ba","https://git.kernel.org/stable/c/e34b9ed96ce3b06c79bf884009b16961ca478f87"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-49622","license":"CVE Program Terms of Use","key":"cve-program:CVE-2022-49622","identifiers":["CVE-2022-49622"]},"retained":false,"historicalAffected":[]}],"coverage":[]}