CVE-2025-38460

In the Linux kernel, the following vulnerability has been resolved: atm: clip: Fix potential null-ptr-deref in to_atmarpd(). atmarpd is protected by RTNL since commit f3a0592b37b8 ("[ATM]: clip causes unregister hang"). However, it is not enough because to_atmarpd() is called without RTNL, especially clip_neigh_solicit() / neigh_ops->solicit() is unsleepable. Also, there is no RTNL dependency around atmarpd. Let's use a private mutex and RCU to protect access to atmarpd in to_atmarpd().

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2025-07-25

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• linux:linux_kernel

References

• https://git.kernel.org/stable/c/06935c50cfa3ac57cce80bba67b6d38ec1406e92
• https://git.kernel.org/stable/c/3251ce3979f41bd228f77a7615f9dd616d06a110
• https://git.kernel.org/stable/c/36caab990b69ef4eec1d81c52a19f080b7daa059
• https://git.kernel.org/stable/c/706cc36477139c1616a9b2b96610a8bb520b7119
• https://git.kernel.org/stable/c/70eac9ba7ce25d99c1d99bbf4ddb058940f631f9

Check your stackJSON