Vulnerability Description
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 Score
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.4, < 5.4.291 |
Related Weaknesses (CWE)
References
- 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
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-503939.html
FAQ
What is CVE-2025-21762?
CVE-2025-21762 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 potent...
How severe is CVE-2025-21762?
CVE-2025-21762 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21762?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.