{"id":"CVE-2026-23442","summary":"ipv6: add NULL checks for idev in SRv6 paths","details":"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 \u003c 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.","modified":"2026-06-18T03:55:37.295704962Z","published":"2026-04-03T15:15:26.851Z","related":["CGA-643c-4v53-578p","SUSE-SU-2026:2068-1","SUSE-SU-2026:21841-1","SUSE-SU-2026:21845-1","SUSE-SU-2026:21860-1","SUSE-SU-2026:21876-1","SUSE-SU-2026:21877-1","SUSE-SU-2026:21916-1","SUSE-SU-2026:21919-1","SUSE-SU-2026:2217-1","SUSE-SU-2026:2238-1","openSUSE-SU-2026:20826-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23442.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/50352fc103928e10e8729abc79a0d05abef26c4d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83d705d35e583cb1b1eacf196dfe7b77d442018e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c5cedee5d97382176573bbe21e1724e737a5eb64"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d1bd8b9edc6752d10f84d28ff64f842401ce336d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23442.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23442"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1ababeba4a21f3dba3da3523c670b207fb2feb62"},{"fixed":"0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4"},{"fixed":"83d705d35e583cb1b1eacf196dfe7b77d442018e"},{"fixed":"d1bd8b9edc6752d10f84d28ff64f842401ce336d"},{"fixed":"50352fc103928e10e8729abc79a0d05abef26c4d"},{"fixed":"bc9843c39f9932a8b36efd1d362ea00bb88e4e78"},{"fixed":"c5cedee5d97382176573bbe21e1724e737a5eb64"},{"fixed":"a25853c9feea7bbf31d157ff6e004d2d3b4f7f13"},{"fixed":"06413793526251870e20402c39930804f14d59c0"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23442.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.136"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.83"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.25"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23442.json"}}],"schema_version":"1.7.5"}