VulnerabilityModified
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.
HIGH 8.1EPSS 0.62%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.62% probability · 48th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.