CVE-2025-21762
Medium
Elevated severity or exploit probability.
CVSS base
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.6%
48.5th percentile
CISA KEV
Not listed
Weakness / dates
CWE-416
Published 2025-02-27 · modified 2026-07-30
CVSS breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | N | Network |
| Attack Complexity | H | High |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2025-02-27 — Published (NVD)
- 2026-07-30 — Last modified (NVD)
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.
Affected
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
- https://git.kernel.org/stable/c/d9366ac2f956a1948b68c0500f84a3462ff2ed8a
- https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3
- https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039
- 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