CVE-2026-31676

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

rxrpc: only handle RESPONSE during service challenge

Only process RESPONSE packets while the service connection is still in

RXRPC_CONN_SERVICE_CHALLENGING. Check that state under state_lock before

running response verification and security initialization, then use a local

secured flag to decide whether to queue the secured-connection work after

the state transition. This keeps duplicate or late RESPONSE packets from

re-running the setup path and removes the unlocked post-transition state

test.