CVE-2025-21763 Information

Description

In the Linux kernel the following vulnerability has been resolved:

neighbour: use RCU protection in __neigh_notify()

__neigh_notify() can be called without RTNL or RCU protection.

Use RCU protection to avoid potential UAF.

Reference

https://git.kernel.org/stable/c/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379 https://git.kernel.org/stable/c/559307d25235e24b5424778c7332451b6c741159 https://git.kernel.org/stable/c/784eb2376270e086f7db136d154b8404edacf97b https://git.kernel.org/stable/c/becbd5850c03ed33b232083dd66c6e38c0c0e569 https://git.kernel.org/stable/c/cdd5c2a12ddad8a77ce1838ff9f29aa587de82df