{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98873","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.377Z","datePublished":"2026-10-23T11:37:14.109Z","dateUpdated":"2026-10-26T06:55:54.978Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-26T06:55:54.978Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_expect: zero at allocation time\n\nThere are occasional LLM hints wrt. leaking uninitialized data to\nuserspace via ctnetlink.  Just zero at allocation time,\nexpectations are not frequently used these days.\n\nIntentionally keeps _init as-is because we could theoretically\nsupport re-init, so add the missing exp->dir there."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_conntrack_expect.c","net/netfilter/nf_conntrack_netlink.c"],"versions":[{"version":"076a0ca02644657b13e4af363f487ced2942e9cb","lessThan":"39cb6ff947c16a576ea68c5f272e634acdcb0085","status":"affected","versionType":"git"},{"version":"076a0ca02644657b13e4af363f487ced2942e9cb","lessThan":"90545aa07a183887e9d72ce573c18e08f62e2c91","status":"affected","versionType":"git"},{"version":"076a0ca02644657b13e4af363f487ced2942e9cb","lessThan":"9c11d7ea5ff4dbe162e79f00188814ef5483c295","status":"affected","versionType":"git"},{"version":"076a0ca02644657b13e4af363f487ced2942e9cb","lessThan":"b7f3ee925aee9f1f547d539bc03c35433c238958","status":"affected","versionType":"git"},{"version":"076a0ca02644657b13e4af363f487ced2942e9cb","lessThan":"824397af7bfe14edad374c64253dae0187ca623d","status":"affected","versionType":"git"},{"version":"076a0ca02644657b13e4af363f487ced2942e9cb","lessThan":"a39ecb856514274c80d0fac4d128dba6b266a8ed","status":"affected","versionType":"git"},{"version":"076a0ca02644657b13e4af363f487ced2942e9cb","lessThan":"241ccd2fed9051db443aadce248fc0ab30f55e97","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_conntrack_expect.c","net/netfilter/nf_conntrack_netlink.c"],"versions":[{"version":"3.4","status":"affected"},{"version":"0","lessThan":"3.4","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":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/39cb6ff947c16a576ea68c5f272e634acdcb0085"},{"url":"https://git.kernel.org/stable/c/90545aa07a183887e9d72ce573c18e08f62e2c91"},{"url":"https://git.kernel.org/stable/c/9c11d7ea5ff4dbe162e79f00188814ef5483c295"},{"url":"https://git.kernel.org/stable/c/b7f3ee925aee9f1f547d539bc03c35433c238958"},{"url":"https://git.kernel.org/stable/c/824397af7bfe14edad374c64253dae0187ca623d"},{"url":"https://git.kernel.org/stable/c/a39ecb856514274c80d0fac4d128dba6b266a8ed"},{"url":"https://git.kernel.org/stable/c/241ccd2fed9051db443aadce248fc0ab30f55e97"}],"title":"netfilter: nf_conntrack_expect: zero at allocation time","x_generator":{"engine":"bippy-1.2.0"}}}}