{"api_version":"1","generated_at":"2026-10-23T01:16:44+00:00","cve":"CVE-2026-98379","urls":{"html":"https://cve.report/CVE-2026-98379","api":"https://cve.report/api/cve/CVE-2026-98379.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98379","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98379"},"summary":{"title":"netfilter: ip6t_rpfilter: reject routes without inet6_dev","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-09 08:16:56","updated_at":"2026-10-19 10:18:41"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f4de78756b0fddbd125b2b1b77c74f2eccc8e977","name":"https://git.kernel.org/stable/c/f4de78756b0fddbd125b2b1b77c74f2eccc8e977","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/65487e9e99431ffcf05024a817f51ee4e3bd9b47","name":"https://git.kernel.org/stable/c/65487e9e99431ffcf05024a817f51ee4e3bd9b47","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1b9b5323725e458906c7620a3bc10398b51ad954","name":"https://git.kernel.org/stable/c/1b9b5323725e458906c7620a3bc10398b51ad954","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1681ab6dd1271f2f36047490793b78b1848bbcc9","name":"https://git.kernel.org/stable/c/1681ab6dd1271f2f36047490793b78b1848bbcc9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40","name":"https://git.kernel.org/stable/c/290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f49da48bd679cfee646d6a40dd02b1933de577d1","name":"https://git.kernel.org/stable/c/f49da48bd679cfee646d6a40dd02b1933de577d1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/eafe081ea77d25b5c8e601680671b4ecb4520e7d","name":"https://git.kernel.org/stable/c/eafe081ea77d25b5c8e601680671b4ecb4520e7d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3a7384bc2e66217c9a01a392281334f4423740a0","name":"https://git.kernel.org/stable/c/3a7384bc2e66217c9a01a392281334f4423740a0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98379","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98379","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e26f9a480fb6c1b614660e824d69a74e2ce990f3 f4de78756b0fddbd125b2b1b77c74f2eccc8e977 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e26f9a480fb6c1b614660e824d69a74e2ce990f3 1681ab6dd1271f2f36047490793b78b1848bbcc9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e26f9a480fb6c1b614660e824d69a74e2ce990f3 65487e9e99431ffcf05024a817f51ee4e3bd9b47 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e26f9a480fb6c1b614660e824d69a74e2ce990f3 f49da48bd679cfee646d6a40dd02b1933de577d1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e26f9a480fb6c1b614660e824d69a74e2ce990f3 290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e26f9a480fb6c1b614660e824d69a74e2ce990f3 eafe081ea77d25b5c8e601680671b4ecb4520e7d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e26f9a480fb6c1b614660e824d69a74e2ce990f3 3a7384bc2e66217c9a01a392281334f4423740a0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e26f9a480fb6c1b614660e824d69a74e2ce990f3 1b9b5323725e458906c7620a3bc10398b51ad954 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.3","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.271 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.222 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.189 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.112 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.55 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.9 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98379","cve":"CVE-2026-98379","epss":"0.001640000","percentile":"0.051700000","score_date":"2026-10-11","updated_at":"2026-10-12 00:13:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv6/netfilter/ip6t_rpfilter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f4de78756b0fddbd125b2b1b77c74f2eccc8e977","status":"affected","version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","versionType":"git"},{"lessThan":"1681ab6dd1271f2f36047490793b78b1848bbcc9","status":"affected","version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","versionType":"git"},{"lessThan":"65487e9e99431ffcf05024a817f51ee4e3bd9b47","status":"affected","version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","versionType":"git"},{"lessThan":"f49da48bd679cfee646d6a40dd02b1933de577d1","status":"affected","version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","versionType":"git"},{"lessThan":"290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40","status":"affected","version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","versionType":"git"},{"lessThan":"eafe081ea77d25b5c8e601680671b4ecb4520e7d","status":"affected","version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","versionType":"git"},{"lessThan":"3a7384bc2e66217c9a01a392281334f4423740a0","status":"affected","version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","versionType":"git"},{"lessThan":"1b9b5323725e458906c7620a3bc10398b51ad954","status":"affected","version":"e26f9a480fb6c1b614660e824d69a74e2ce990f3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv6/netfilter/ip6t_rpfilter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.3"},{"lessThan":"3.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.271","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.222","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.112","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.55","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.271","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.222","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.112","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.55","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.9","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"3.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:18:30.044Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/f4de78756b0fddbd125b2b1b77c74f2eccc8e977"},{"url":"https://git.kernel.org/stable/c/1681ab6dd1271f2f36047490793b78b1848bbcc9"},{"url":"https://git.kernel.org/stable/c/65487e9e99431ffcf05024a817f51ee4e3bd9b47"},{"url":"https://git.kernel.org/stable/c/f49da48bd679cfee646d6a40dd02b1933de577d1"},{"url":"https://git.kernel.org/stable/c/290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40"},{"url":"https://git.kernel.org/stable/c/eafe081ea77d25b5c8e601680671b4ecb4520e7d"},{"url":"https://git.kernel.org/stable/c/3a7384bc2e66217c9a01a392281334f4423740a0"},{"url":"https://git.kernel.org/stable/c/1b9b5323725e458906c7620a3bc10398b51ad954"}],"title":"netfilter: ip6t_rpfilter: reject routes without inet6_dev","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98379","datePublished":"2026-10-09T07:34:19.425Z","dateReserved":"2026-09-25T10:25:14.345Z","dateUpdated":"2026-10-19T09:18:30.044Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-09 08:16:56","lastModifiedDate":"2026-10-19 10:18:41","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98379","Ordinal":"1","Title":"netfilter: ip6t_rpfilter: reject routes without inet6_dev","CVE":"CVE-2026-98379","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98379","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"netfilter: ip6t_rpfilter: reject routes without inet6_dev"}]}}}