{"id":"CVE-2025-21760","revision":null,"records":[{"revision":"318c80122c864b73b3db3ae3606c48bf","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-21760","aliases":[],"title":"ndisc: extend RCU protection in ndisc_send_skb()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nndisc: extend RCU protection in ndisc_send_skb()\n\nndisc_send_skb() can be called without RTNL or RCU held.\n\nAcquire rcu_read_lock() earlier, so that we can use dev_net_rcu()\nand avoid a potential UAF.","state":0,"publishedAt":"2025-02-27T02:18:13.496+00:00","modifiedAt":"2026-10-15T01:04:05.78+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/ipv6/ndisc.c\"\n ],\n \"versions\": [\n {\n \"version\": \"1762f7e88eb34f653b4a915be99a102e347dd45e\",\n \"lessThan\": \"10a1f3fece2f0d23a3a618b72b2b4e6f408ef7d1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1762f7e88eb34f653b4a915be99a102e347dd45e\",\n \"lessThan\": \"4d576202b90b1b95a7c428a80b536f91b8201bcc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1762f7e88eb34f653b4a915be99a102e347dd45e\",\n \"lessThan\": \"e24d225e4cb8cf108bde00b76594499b98f0a74d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1762f7e88eb34f653b4a915be99a102e347dd45e\",\n \"lessThan\": \"a9319d800b5701e7f5e3fa71a5b7c4831fc20d6d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1762f7e88eb34f653b4a915be99a102e347dd45e\",\n \"lessThan\": \"ae38982f521621c216fc2f5182cd091f4734641d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1762f7e88eb34f653b4a915be99a102e347dd45e\",\n \"lessThan\": \"789230e5a8c1097301afc802e242c79bc8835c67\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1762f7e88eb34f653b4a915be99a102e347dd45e\",\n \"lessThan\": \"04e05112f10354ffc3bb6cc796d553bab161594c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1762f7e88eb34f653b4a915be99a102e347dd45e\",\n \"lessThan\": \"ed6ae1f325d3c43966ec1b62ac1459e2b8e45640\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/ipv6/ndisc.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2.6.26\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"2.6.26\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.291\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.235\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.179\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.129\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.79\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.16\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.13.4\",\n \"lessThanOrEqual\": \"6.13.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.14\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/10a1f3fece2f0d23a3a618b72b2b4e6f408ef7d1","https://git.kernel.org/stable/c/4d576202b90b1b95a7c428a80b536f91b8201bcc","https://git.kernel.org/stable/c/e24d225e4cb8cf108bde00b76594499b98f0a74d","https://git.kernel.org/stable/c/a9319d800b5701e7f5e3fa71a5b7c4831fc20d6d","https://git.kernel.org/stable/c/ae38982f521621c216fc2f5182cd091f4734641d","https://git.kernel.org/stable/c/789230e5a8c1097301afc802e242c79bc8835c67","https://git.kernel.org/stable/c/04e05112f10354ffc3bb6cc796d553bab161594c","https://git.kernel.org/stable/c/ed6ae1f325d3c43966ec1b62ac1459e2b8e45640"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-21760","license":"CVE Program Terms of 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