{"id":"CVE-2026-74746","revision":"2d3558fb957a405ea089f8c9656ccfad","records":[{"revision":"2d3558fb957a405ea089f8c9656ccfad","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74746","aliases":[],"title":"netfilter: flowtable: publish GC-visible tuple last","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable: publish GC-visible tuple last\n\nnf_flow_table_iterate() only treats original-direction tuple nodes as\nowning entries. Publishing the original node first lets GC observe and\nfree a flow while flow_offload_add() is still inserting the reply node.\nPublish the reply node first and the original node last so GC never\nsees a partially installed flow.\n\nKASAN can trigger slab-use-after-free read and write reports in the\nflowtable/rhashtable path (rht_deferred_worker, jhash, flow_offload_del,\nflow_offload_lookup, etc.).","state":0,"publishedAt":"2026-08-26T14:36:55.963+00:00","modifiedAt":"2026-10-16T19:26:23.781+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                        \"net/netfilter/nf_flow_table_core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"ac2a66665e231847cab11b8c8e844ce43207dd2e\",\n                            \"lessThan\": \"0a00254585827f1695aa2700114af622ea754cfa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac2a66665e231847cab11b8c8e844ce43207dd2e\",\n                            \"lessThan\": \"be345dcbddb4643a54252b954af974b16eda8f91\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac2a66665e231847cab11b8c8e844ce43207dd2e\",\n                            \"lessThan\": \"211ee5d998d92a7d548811939c65942d06c146e4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac2a66665e231847cab11b8c8e844ce43207dd2e\",\n                            \"lessThan\": \"d37917e7bebe078f3c17e47fd6fc1c9f6e8497b2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac2a66665e231847cab11b8c8e844ce43207dd2e\",\n                            \"lessThan\": \"972fdf7c4f5c282a239c88fea614b056c33dc025\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac2a66665e231847cab11b8c8e844ce43207dd2e\",\n                            \"lessThan\": \"d9d3050a70efe217e73a0751e55fdae6a7092620\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac2a66665e231847cab11b8c8e844ce43207dd2e\",\n                            \"lessThan\": \"d16b71231e65cb05daea2b45701fcf09cef041e7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac2a66665e231847cab11b8c8e844ce43207dd2e\",\n                            \"lessThan\": \"2014ac62df9d45bb9a004a043e85df7be09ed780\",\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                        \"net/netfilter/nf_flow_table_core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.266\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.217\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.184\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.153\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.105\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.46\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.10\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/0a00254585827f1695aa2700114af622ea754cfa","https://git.kernel.org/stable/c/be345dcbddb4643a54252b954af974b16eda8f91","https://git.kernel.org/stable/c/211ee5d998d92a7d548811939c65942d06c146e4","https://git.kernel.org/stable/c/d37917e7bebe078f3c17e47fd6fc1c9f6e8497b2","https://git.kernel.org/stable/c/972fdf7c4f5c282a239c88fea614b056c33dc025","https://git.kernel.org/stable/c/d9d3050a70efe217e73a0751e55fdae6a7092620","https://git.kernel.org/stable/c/d16b71231e65cb05daea2b45701fcf09cef041e7","https://git.kernel.org/stable/c/2014ac62df9d45bb9a004a043e85df7be09ed780"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74746","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74746","identifiers":["CVE-2026-74746"]},"retained":false,"historicalAffected":[]}],"coverage":[]}