{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-98379", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98379", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-10-09T07:34:19.425Z", "updatedAt": "2026-10-19T09:18:30.044Z", "importedAt": "2026-10-24T01:58:41.756Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "netfilter: ip6t_rpfilter: reject routes without inet6_dev", "summary": "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.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "e26f9a480fb6c1b614660e824d69a74e2ce990f3", "status": "affected", "versionType": "git", "lessThan": "f4de78756b0fddbd125b2b1b77c74f2eccc8e977" }, { "version": "e26f9a480fb6c1b614660e824d69a74e2ce990f3", "status": "affected", "versionType": "git", "lessThan": "1681ab6dd1271f2f36047490793b78b1848bbcc9" }, { "version": "e26f9a480fb6c1b614660e824d69a74e2ce990f3", "status": "affected", "versionType": "git", "lessThan": "65487e9e99431ffcf05024a817f51ee4e3bd9b47" }, { "version": "e26f9a480fb6c1b614660e824d69a74e2ce990f3", "status": "affected", "versionType": "git", "lessThan": "f49da48bd679cfee646d6a40dd02b1933de577d1" }, { "version": "e26f9a480fb6c1b614660e824d69a74e2ce990f3", "status": "affected", "versionType": "git", "lessThan": "290c96e5d9471d1ded9ab1e8ffbb04f6ee7b0f40" }, { "version": "e26f9a480fb6c1b614660e824d69a74e2ce990f3", "status": "affected", "versionType": "git", "lessThan": "eafe081ea77d25b5c8e601680671b4ecb4520e7d" }, { "version": "e26f9a480fb6c1b614660e824d69a74e2ce990f3", "status": "affected", "versionType": "git", "lessThan": "3a7384bc2e66217c9a01a392281334f4423740a0" }, { "version": "e26f9a480fb6c1b614660e824d69a74e2ce990f3", "status": "affected", "versionType": "git", "lessThan": "1b9b5323725e458906c7620a3bc10398b51ad954" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "3.3", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "3.3" }, { "version": "5.10.271", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.222", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.189", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.158", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.112", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.55", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.2.9", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.2.*" }, { "version": "7.3", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }