{"schema":"threatline.record/2","record":{"id":"CVE-2026-98370","aliases":[],"summary":"xfrm: fix compat ALLOCSPI request use-after-free","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix compat ALLOCSPI request use-after-free\n\nxfrm_state_netlink() builds the ALLOCSPI response with\ndump_one_state(), which already calls alloc_compat() with the response\nskb and header.\n\nxfrm_alloc_userspi() then calls alloc_compat() again, but passes the\noriginal request skb and its header. For a compat request, the\ntranslator therefore interprets the 228-byte compat xfrm_userspi_info\nas the 232-byte native layout and reads four bytes past the declared\npayload. It also publishes the translated child through the request's\nfrag_list.\n\nA multicast clone of the request shares skb_shared_info and can observe\nthat child. xfrm_user_rcv_msg() frees it after the request handler\nreturns, racing a compat receiver which may still be copying from it and\nresulting in a use-after-free.\n\nRemove the redundant conversion. The response keeps its correct compat\ntranslation from dump_one_state(), and no child is attached to the\ninbound request.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98370","source_modified_at":"2026-10-19T09:18:22.245Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3","lessThan":"494f2bee9d8d0ebcfa249ac41bed7fed26d119b4","status":"affected","versionType":"git"},{"version":"5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3","lessThan":"17893987e52918c23945c42e47e894a936305a25","status":"affected","versionType":"git"},{"version":"5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3","lessThan":"42971ea17c7a8afc0bdd5ca40648bf4e5bb7b810","status":"affected","versionType":"git"},{"version":"5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3","lessThan":"2b63341e2ebc9b6f73cbd9214dbe7d46dd98c718","status":"affected","versionType":"git"},{"version":"5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3","lessThan":"bb63ab52a18273ec68340ac49aebbaa7b514ccd5","status":"affected","versionType":"git"},{"version":"5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3","lessThan":"248433942155b42a0ef04a5806c8aca024ea7c33","status":"affected","versionType":"git"},{"version":"5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3","lessThan":"e70f639aee2ff0def155c256cace9e0f81d998e2","status":"affected","versionType":"git"},{"version":"5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3","lessThan":"d1ebd9081879fd9ae9c8fb7e8928f19cc88ae320","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98370","source_modified_at":"2026-10-19T09:18:22.245Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98370","source_modified_at":"2026-10-19T09:18:22.245Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"494f2bee9d8d0ebcfa249ac41bed7fed26d119b4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98370","source_modified_at":"2026-10-19T09:18:22.245Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"17893987e52918c23945c42e47e894a936305a25","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98370","source_modified_at":"2026-10-19T09:18:22.245Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"42971ea17c7a8afc0bdd5ca40648bf4e5bb7b810","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98370","source_modified_at":"2026-10-19T09:18:22.245Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2b63341e2ebc9b6f73cbd9214dbe7d46dd98c718","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98370","source_modified_at":"2026-10-19T09:18:22.245Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"248433942155b42a0ef04a5806c8aca024ea7c33","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00172,"percentile":0.06233,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:46:54.981Z","modified_at":"2026-10-19T09:18:22.245Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98370","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:18:22.245Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98370","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/494f2bee9d8d0ebcfa249ac41bed7fed26d119b4"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/17893987e52918c23945c42e47e894a936305a25"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/42971ea17c7a8afc0bdd5ca40648bf4e5bb7b810"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2b63341e2ebc9b6f73cbd9214dbe7d46dd98c718"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/bb63ab52a18273ec68340ac49aebbaa7b514ccd5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/248433942155b42a0ef04a5806c8aca024ea7c33"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e70f639aee2ff0def155c256cace9e0f81d998e2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d1ebd9081879fd9ae9c8fb7e8928f19cc88ae320"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:18:22.245Z","content_hash":"954c914c99fea0f4393acb6039b871c9c1f4ed240a320223f75ad56f45e271f6"}}