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ipc: shm: fix information leak to userland
authorVasiliy Kulikov <segooon@gmail.com>
Sat, 30 Oct 2010 14:22:49 +0000 (18:22 +0400)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 9 Dec 2010 21:24:17 +0000 (13:24 -0800)
commit77f5c399311bd4a6d8836dbd788dd0e45a582d15
tree4aeef8e0c7eeed930ea9670f706ba2fcd99d9f77tree | snapshot
parentf6d7c2efda237f01fedc31965d056226e0df6a1dcommit | diff
ipc: shm: fix information leak to userland

commit 3af54c9bd9e6f14f896aac1bb0e8405ae0bc7a44 upstream.

The shmid_ds structure is copied to userland with shm_unused{,2,3}
fields unitialized.  It leads to leaking of contents of kernel stack
memory.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ipc/shm.c diff | blob | history
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