{"schema":"threatline.record/2","record":{"id":"CVE-2026-98379","aliases":[],"summary":"netfilter: ip6t_rpfilter: reject routes without inet6_dev","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ip6t_rpfilter: reject routes without inet6_dev\n\nip6_route_lookup() can return an error-free route whose rt6i_idev is\nNULL. Lowering an external nexthop device's MTU below IPV6_MIN_MTU tears\ndown its inet6_dev while fib6_ifdown() leaves routes using nexthop objects\nin the FIB. An unprivileged user can construct this state with rtnetlink\nin a private user and network namespace, then trigger a NULL dereference\nthrough an IPv6 rpfilter lookup:\n\n  Oops: general protection fault, probably for non-canonical address\n  0xdffffc0000000000\n  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n  RIP: rpfilter_mt (net/ipv6/netfilter/ip6t_rpfilter.c:75)\n  Call Trace:\n  ip6t_do_table (net/ipv6/netfilter/ip6_tables.c:316)\n  nf_hook_slow (net/netfilter/core.c:619)\n  ipv6_rcv (net/ipv6/ip6_input.c:351)\n  __netif_receive_skb_one_core (net/core/dev.c:6216)\n  process_backlog (net/core/dev.c:6680)\n  __napi_poll (net/core/dev.c:7739)\n  net_rx_action (net/core/dev.c:7959)\n  handle_softirqs (kernel/softirq.c:622)\n  do_softirq.part.0 (kernel/softirq.c:523)\n  __local_bh_enable_ip (kernel/softirq.c:450)\n  __dev_queue_xmit (net/core/dev.c:4913)\n  packet_sendmsg (net/packet/af_packet.c:3139)\n  __sys_sendto (net/socket.c:2252)\n  __x64_sys_sendto (net/socket.c:2259)\n  do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n  Kernel panic - not syncing: Fatal exception in interrupt\n\nReject routes without an inet6_dev immediately after lookup. Such routes\nare not eligible for reverse-path filtering, and the check protects all\nlater rt6i_idev dereferences.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98379","source_modified_at":"2026-10-19T09:18:30.044Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","lessThan":"f4de78756b0fddbd125b2b1b77c74f2eccc8e977","status":"affected","versionType":"git"},{"version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","lessThan":"1681ab6dd1271f2f36047490793b78b1848bbcc9","status":"affected","versionType":"git"},{"version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","lessThan":"65487e9e99431ffcf05024a817f51ee4e3bd9b47","status":"affected","versionType":"git"},{"version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","lessThan":"f49da48bd679cfee646d6a40dd02b1933de577d1","status":"affected","versionType":"git"},{"version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","lessThan":"290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40","status":"affected","versionType":"git"},{"version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","lessThan":"eafe081ea77d25b5c8e601680671b4ecb4520e7d","status":"affected","versionType":"git"},{"version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","lessThan":"3a7384bc2e66217c9a01a392281334f4423740a0","status":"affected","versionType":"git"},{"version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","lessThan":"1b9b5323725e458906c7620a3bc10398b51ad954","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98379","source_modified_at":"2026-10-19T09:18:30.044Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"3.3","status":"affected"},{"version":"0","lessThan":"3.3","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":"6.18.55","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.9","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-2026-98379","source_modified_at":"2026-10-19T09:18:30.044Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1681ab6dd1271f2f36047490793b78b1848bbcc9","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98379","source_modified_at":"2026-10-19T09:18:30.044Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"65487e9e99431ffcf05024a817f51ee4e3bd9b47","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98379","source_modified_at":"2026-10-19T09:18:30.044Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98379","source_modified_at":"2026-10-19T09:18:30.044Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"3a7384bc2e66217c9a01a392281334f4423740a0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98379","source_modified_at":"2026-10-19T09:18:30.044Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1b9b5323725e458906c7620a3bc10398b51ad954","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00164,"percentile":0.05359,"score_date":"2026-10-23"},"published_at":"2026-10-09T07:34:19.425Z","modified_at":"2026-10-19T09:18:30.044Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98379","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:18:30.044Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98379","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/f4de78756b0fddbd125b2b1b77c74f2eccc8e977"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1681ab6dd1271f2f36047490793b78b1848bbcc9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/65487e9e99431ffcf05024a817f51ee4e3bd9b47"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f49da48bd679cfee646d6a40dd02b1933de577d1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/eafe081ea77d25b5c8e601680671b4ecb4520e7d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/3a7384bc2e66217c9a01a392281334f4423740a0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1b9b5323725e458906c7620a3bc10398b51ad954"}],"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":"2026-10-19T09:18:30.044Z","content_hash":"46e933b26b1849d1ebc3db7c76ed3e7240df687ec4c0280265c3598e12ab9f70"}}