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authorDavid S. Miller <davem@davemloft.net>2011-01-05 23:38:53 (GMT)
committerDavid S. Miller <davem@davemloft.net>2011-01-05 23:38:53 (GMT)
commit3610cda53f247e176bcbb7a7cca64bc53b12acdb (patch)
treed780bc1e405116e75a194b2f4693a6f9bbe9f58f /net/unix
parent44b8288308ac9da27eab7d7bdbf1375a568805c3 (diff)
downloadlinux-3610cda53f247e176bcbb7a7cca64bc53b12acdb.tar.xz
af_unix: Avoid socket->sk NULL OOPS in stream connect security hooks.
unix_release() can asynchornously set socket->sk to NULL, and it does so without holding the unix_state_lock() on "other" during stream connects. However, the reverse mapping, sk->sk_socket, is only transitioned to NULL under the unix_state_lock(). Therefore make the security hooks follow the reverse mapping instead of the forward mapping. Reported-by: Jeremy Fitzhardinge <jeremy@goop.org> Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/unix')
-rw-r--r--net/unix/af_unix.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 417d7a6..dd419d2 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1157,7 +1157,7 @@ restart:
goto restart;
}
- err = security_unix_stream_connect(sock, other->sk_socket, newsk);
+ err = security_unix_stream_connect(sk, other, newsk);
if (err) {
unix_state_unlock(sk);
goto out_unlock;