{"id":"CVE-2025-21762","summary":"arp: use RCU protection in arp_xmit()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\narp: use RCU protection in arp_xmit()\n\narp_xmit() can be called without RTNL or RCU protection.\n\nUse RCU protection to avoid potential UAF.","modified":"2026-04-02T12:45:12.598259Z","published":"2025-02-27T02:18:14.600Z","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":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21762.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/10f555e3f573d004ae9d89b3276abb58c4ede5c3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/307cd1e2d3cb1cbc6c40c679cada6d7168b18431"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d9366ac2f956a1948b68c0500f84a3462ff2ed8a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039"},{"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-2025-21762.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21762"},{"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":"29a26a56803855a79dbd028cd61abee56237d6e5"},{"fixed":"10f555e3f573d004ae9d89b3276abb58c4ede5c3"},{"fixed":"307cd1e2d3cb1cbc6c40c679cada6d7168b18431"},{"fixed":"d9366ac2f956a1948b68c0500f84a3462ff2ed8a"},{"fixed":"f189654459423d4d48bef2d120b4bfba559e6039"},{"fixed":"e9f4dee534eb1b225b0a120395ad9bc2afe164d3"},{"fixed":"01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe"},{"fixed":"2c331718d3389b6c5f6855078ab7171849e016bd"},{"fixed":"a42b69f692165ec39db42d595f4f65a4c8f42e44"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21762.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"}]}