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net/appletalk: fix atalk_release use after free
authorArnd Bergmann <arnd@arndb.de>
Tue, 22 Mar 2011 01:18:00 +0000 (18:18 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 22 Mar 2011 01:18:00 +0000 (18:18 -0700)
commitb20e7bbfc7a15a4182730f0936433145992b4b06
tree81df1570eb7840b9ed5b981ad2e437b773448f5atree | snapshot (tar.gz zip)
parent674f2115995b7b588cbf3540c9f9b2448a8c7ea8commit | diff
net/appletalk: fix atalk_release use after free

The BKL removal in appletalk introduced a use-after-free problem,
where atalk_destroy_socket frees a sock, but we still release
the socket lock on it.

An easy fix is to take an extra reference on the sock and sock_put
it when returning from atalk_release.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/appletalk/ddp.c diff | blob | blame | history