CVE-2025-40080

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

nbd: restrict sockets to TCP and UDP

Recently, syzbot started to abuse NBD with all kinds of sockets.

Commit cf1b2326b734 (“nbd: verify socket is supported during setup”)
made sure the socket supported a shutdown() method.

Explicitely accept TCP and UNIX stream sockets.

More information : https://git.kernel.org/stable/c/37ad11f20e164c23ce827dd455b42c0fdd29685c