{"id":"CVE-2025-21763","summary":"neighbour: use RCU protection in __neigh_notify()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nneighbour: use RCU protection in __neigh_notify()\n\n__neigh_notify() can be called without RTNL or RCU protection.\n\nUse RCU protection to avoid potential UAF.","modified":"2026-04-02T12:45:12.578458Z","published":"2025-02-27T02:18:15.078Z","related":["SUSE-SU-2025:01919-1","SUSE-SU-2025:01951-1","SUSE-SU-2025:01967-1","SUSE-SU-2025:1177-1","SUSE-SU-2025:1178-1","SUSE-SU-2025:1180-1","SUSE-SU-2025:1293-1","SUSE-SU-2025:20190-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20260-1","SUSE-SU-2025:20270-1","USN-7521-2"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21763.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379"},{"type":"WEB","url":"https://git.kernel.org/stable/c/40d8f2f2a373b6c294ffac394d2bb814b572ead1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/559307d25235e24b5424778c7332451b6c741159"},{"type":"WEB","url":"https://git.kernel.org/stable/c/784eb2376270e086f7db136d154b8404edacf97b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8666e9aab801328c1408a19fbf4070609dc0695a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/becbd5850c03ed33b232083dd66c6e38c0c0e569"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cdd5c2a12ddad8a77ce1838ff9f29aa587de82df"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e1aed6be381bcd7f46d4ca9d7ef0f5f3d6a1be32"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21763.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21763"},{"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":"426b5303eb435d98b9bee37a807be386bc2b3320"},{"fixed":"e1aed6be381bcd7f46d4ca9d7ef0f5f3d6a1be32"},{"fixed":"8666e9aab801328c1408a19fbf4070609dc0695a"},{"fixed":"40d8f2f2a373b6c294ffac394d2bb814b572ead1"},{"fixed":"784eb2376270e086f7db136d154b8404edacf97b"},{"fixed":"1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379"},{"fixed":"cdd5c2a12ddad8a77ce1838ff9f29aa587de82df"},{"fixed":"559307d25235e24b5424778c7332451b6c741159"},{"fixed":"becbd5850c03ed33b232083dd66c6e38c0c0e569"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21763.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}