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authorDavid Howells <dhowells@redhat.com>2019-12-20 17:17:16 +0100
committerDavid Howells <dhowells@redhat.com>2019-12-20 17:21:32 +0100
commit063c60d39180cec7c9317f5acfc3071f8fecd705 (patch)
tree771d26b217eeed8115116b8fb23a90963d6eea36 /drivers
parentrxrpc: Don't take call->user_mutex in rxrpc_new_incoming_call() (diff)
downloadlinux-063c60d39180cec7c9317f5acfc3071f8fecd705.tar.xz
linux-063c60d39180cec7c9317f5acfc3071f8fecd705.zip
rxrpc: Fix missing security check on incoming calls
Fix rxrpc_new_incoming_call() to check that we have a suitable service key available for the combination of service ID and security class of a new incoming call - and to reject calls for which we don't. This causes an assertion like the following to appear: rxrpc: Assertion failed - 6(0x6) == 12(0xc) is false kernel BUG at net/rxrpc/call_object.c:456! Where call->state is RXRPC_CALL_SERVER_SECURING (6) rather than RXRPC_CALL_COMPLETE (12). Fixes: 248f219cb8bc ("rxrpc: Rewrite the data and ack handling code") Reported-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com>
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