{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23442","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:37:46.018Z","datePublished":"2026-04-03T15:15:26.851Z","dateUpdated":"2026-05-11T22:06:59.286Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:06:59.286Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: add NULL checks for idev in SRv6 paths\n\n__in6_dev_get() can return NULL when the device has no IPv6 configuration\n(e.g. MTU < IPV6_MIN_MTU or after NETDEV_UNREGISTER).\n\nAdd NULL checks for idev returned by __in6_dev_get() in both\nseg6_hmac_validate_skb() and ipv6_srh_rcv() to prevent potential NULL\npointer dereferences."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv6/exthdrs.c","net/ipv6/seg6_hmac.c"],"versions":[{"version":"1ababeba4a21f3dba3da3523c670b207fb2feb62","lessThan":"50352fc103928e10e8729abc79a0d05abef26c4d","status":"affected","versionType":"git"},{"version":"1ababeba4a21f3dba3da3523c670b207fb2feb62","lessThan":"bc9843c39f9932a8b36efd1d362ea00bb88e4e78","status":"affected","versionType":"git"},{"version":"1ababeba4a21f3dba3da3523c670b207fb2feb62","lessThan":"c5cedee5d97382176573bbe21e1724e737a5eb64","status":"affected","versionType":"git"},{"version":"1ababeba4a21f3dba3da3523c670b207fb2feb62","lessThan":"a25853c9feea7bbf31d157ff6e004d2d3b4f7f13","status":"affected","versionType":"git"},{"version":"1ababeba4a21f3dba3da3523c670b207fb2feb62","lessThan":"06413793526251870e20402c39930804f14d59c0","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/ipv6/exthdrs.c","net/ipv6/seg6_hmac.c"],"versions":[{"version":"4.10","status":"affected"},{"version":"0","lessThan":"4.10","status":"unaffected","versionType":"semver"},{"version":"6.6.136","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.83","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.25","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.10","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","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":"4.10","versionEndExcluding":"6.6.136"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.12.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.18.25"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.19.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/50352fc103928e10e8729abc79a0d05abef26c4d"},{"url":"https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78"},{"url":"https://git.kernel.org/stable/c/c5cedee5d97382176573bbe21e1724e737a5eb64"},{"url":"https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13"},{"url":"https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0"}],"title":"ipv6: add NULL checks for idev in SRv6 paths","x_generator":{"engine":"bippy-1.2.0"}}}}