Commit 38b1dc47 authored by David Howells's avatar David Howells

rxrpc: Fix server keyring leak

If someone calls setsockopt() twice to set a server key keyring, the first
keyring is leaked.

Fix it to return an error instead if the server key keyring is already set.

Fixes: 17926a79 ("[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both")
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
parent fea99111
......@@ -903,7 +903,7 @@ int rxrpc_request_key(struct rxrpc_sock *rx, sockptr_t optval, int optlen)
_enter("");
if (optlen <= 0 || optlen > PAGE_SIZE - 1)
if (optlen <= 0 || optlen > PAGE_SIZE - 1 || rx->securities)
return -EINVAL;
description = memdup_sockptr_nul(optval, optlen);
......
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