{"api_version":"1","generated_at":"2026-07-20T14:43:00+00:00","cve":"CVE-2026-64116","urls":{"html":"https://cve.report/CVE-2026-64116","api":"https://cve.report/api/cve/CVE-2026-64116.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64116","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64116"},"summary":{"title":"ipv6: ioam: add NULL check for idev in ipv6_hop_ioam()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: ioam: add NULL check for idev in ipv6_hop_ioam()\n\nReported by Sashiko:\n\nThe function ipv6_hop_ioam() accesses\n__in6_dev_get(skb->dev)->cnf.ioam6_enabled without validating the returned\nidev pointer. Because addrconf_ifdown() can concurrently clear dev->ip6_ptr\nvia RCU, __in6_dev_get() can return NULL during interface teardown, which\ncould cause a NULL pointer dereference when processing an IOAM Hop-by-Hop\noption.\n\nLet's add a check and use SKB_DROP_REASON_IPV6DISABLED accordingly.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:53","updated_at":"2026-07-19 16:17:53"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/902daac307eb7e1955ce05b071950f3cba88c963","name":"https://git.kernel.org/stable/c/902daac307eb7e1955ce05b071950f3cba88c963","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/abdd03229414b5a52943b65a60f34b84cea5ac59","name":"https://git.kernel.org/stable/c/abdd03229414b5a52943b65a60f34b84cea5ac59","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c7e8971abd70e9d022f1c251ba2508f8dc7f2db8","name":"https://git.kernel.org/stable/c/c7e8971abd70e9d022f1c251ba2508f8dc7f2db8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1dca7e491f070ac49b3d934f16ee953a53b37f38","name":"https://git.kernel.org/stable/c/1dca7e491f070ac49b3d934f16ee953a53b37f38","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cf75eb6617042c8cff6112daeed7791809fc9dd2","name":"https://git.kernel.org/stable/c/cf75eb6617042c8cff6112daeed7791809fc9dd2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9","name":"https://git.kernel.org/stable/c/d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/09cbfd4b81ae90963dadb1de99b63b702e73290a","name":"https://git.kernel.org/stable/c/09cbfd4b81ae90963dadb1de99b63b702e73290a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64116","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64116","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 c7e8971abd70e9d022f1c251ba2508f8dc7f2db8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 09cbfd4b81ae90963dadb1de99b63b702e73290a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 1dca7e491f070ac49b3d934f16ee953a53b37f38 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 902daac307eb7e1955ce05b071950f3cba88c963 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 abdd03229414b5a52943b65a60f34b84cea5ac59 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 cf75eb6617042c8cff6112daeed7791809fc9dd2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.210 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.176 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.143 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv6/exthdrs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c7e8971abd70e9d022f1c251ba2508f8dc7f2db8","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"},{"lessThan":"09cbfd4b81ae90963dadb1de99b63b702e73290a","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"},{"lessThan":"1dca7e491f070ac49b3d934f16ee953a53b37f38","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"},{"lessThan":"902daac307eb7e1955ce05b071950f3cba88c963","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"},{"lessThan":"abdd03229414b5a52943b65a60f34b84cea5ac59","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"},{"lessThan":"cf75eb6617042c8cff6112daeed7791809fc9dd2","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"},{"lessThan":"d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9","status":"affected","version":"9ee11f0fff205b4b3df9750bff5e94f97c71b6a0","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv6/exthdrs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.210","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.176","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.143","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: ioam: add NULL check for idev in ipv6_hop_ioam()\n\nReported by Sashiko:\n\nThe function ipv6_hop_ioam() accesses\n__in6_dev_get(skb->dev)->cnf.ioam6_enabled without validating the returned\nidev pointer. Because addrconf_ifdown() can concurrently clear dev->ip6_ptr\nvia RCU, __in6_dev_get() can return NULL during interface teardown, which\ncould cause a NULL pointer dereference when processing an IOAM Hop-by-Hop\noption.\n\nLet's add a check and use SKB_DROP_REASON_IPV6DISABLED accordingly."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:16.240Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c7e8971abd70e9d022f1c251ba2508f8dc7f2db8"},{"url":"https://git.kernel.org/stable/c/09cbfd4b81ae90963dadb1de99b63b702e73290a"},{"url":"https://git.kernel.org/stable/c/1dca7e491f070ac49b3d934f16ee953a53b37f38"},{"url":"https://git.kernel.org/stable/c/902daac307eb7e1955ce05b071950f3cba88c963"},{"url":"https://git.kernel.org/stable/c/abdd03229414b5a52943b65a60f34b84cea5ac59"},{"url":"https://git.kernel.org/stable/c/cf75eb6617042c8cff6112daeed7791809fc9dd2"},{"url":"https://git.kernel.org/stable/c/d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9"}],"title":"ipv6: ioam: add NULL check for idev in ipv6_hop_ioam()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64116","datePublished":"2026-07-19T15:40:16.240Z","dateReserved":"2026-07-19T07:54:57.035Z","dateUpdated":"2026-07-19T15:40:16.240Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:53","lastModifiedDate":"2026-07-19 16:17:53","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64116","Ordinal":"1","Title":"ipv6: ioam: add NULL check for idev in ipv6_hop_ioam()","CVE":"CVE-2026-64116","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64116","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: ioam: add NULL check for idev in ipv6_hop_ioam()\n\nReported by Sashiko:\n\nThe function ipv6_hop_ioam() accesses\n__in6_dev_get(skb->dev)->cnf.ioam6_enabled without validating the returned\nidev pointer. Because addrconf_ifdown() can concurrently clear dev->ip6_ptr\nvia RCU, __in6_dev_get() can return NULL during interface teardown, which\ncould cause a NULL pointer dereference when processing an IOAM Hop-by-Hop\noption.\n\nLet's add a check and use SKB_DROP_REASON_IPV6DISABLED accordingly.","Type":"Description","Title":"ipv6: ioam: add NULL check for idev in ipv6_hop_ioam()"}]}}}