CVE-2025-21762
HIGH severity · CVSS 8.1 · Use-after-free
8.1CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbePatch
- https://git.kernel.org/stable/c/10f555e3f573d004ae9d89b3276abb58c4ede5c3Patch
- https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bdPatch
- https://git.kernel.org/stable/c/307cd1e2d3cb1cbc6c40c679cada6d7168b18431Patch
- https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44Patch
- https://git.kernel.org/stable/c/d9366ac2f956a1948b68c0500f84a3462ff2ed8aPatch
- https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3Patch
- https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039Patch