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().

The following products are affected by CVE-2025-38460 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-38460.

URL	Resource
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
https://git.kernel.org/stable/c/a4c5785feb979cd996a99cfaad8bf353b2e79301
https://git.kernel.org/stable/c/ee4d9e4ddf3f9c4ee2ec0a3aad6196ee36d30e57
https://git.kernel.org/stable/c/f58e4270c73e7f086322978d585ea67c8076ce49
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
https://lore.kernel.org/linux-cve-announce/2025072507-CVE-2025-38460-40fb@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-38460
https://www.cve.org/CVERecord?id=CVE-2025-38460