CVE-2026-31631

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()

Fix rxgk_do_verify_authenticator() to check the buffer size before checking
the nonce.

More information : https://git.kernel.org/stable/c/1c4422d8be81718ecb15d79aedff607323085201