CVE-2025-21762

In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arp_xmit() arp_xmit() can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF.

CVSS 3.1

8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2025-02-27

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe
• https://git.kernel.org/stable/c/10f555e3f573d004ae9d89b3276abb58c4ede5c3
• https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bd
• https://git.kernel.org/stable/c/307cd1e2d3cb1cbc6c40c679cada6d7168b18431
• https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44

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