https://github.com/torvalds/linux
Revision f015ac3edd84ad72f88e08a4d83c56c360aae404 authored by Don Mullis on 30 September 2010, 22:15:32 UTC, committed by Linus Torvalds on 01 October 2010, 17:50:58 UTC
If the original list is a POT in length, the first callback from line 73
will pass a==b both pointing to the original list_head.  This is dangerous
because the 'list_sort()' user can use 'container_of()' and accesses the
"containing" object, which does not necessary exist for the list head.  So
the user can access RAM which does not belong to him.  If this is a write
access, we can end up with memory corruption.

Signed-off-by: Don Mullis <don.mullis@gmail.com>
Tested-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 982f7c2
History
Tip revision: f015ac3edd84ad72f88e08a4d83c56c360aae404 authored by Don Mullis on 30 September 2010, 22:15:32 UTC
lib/list_sort: do not pass bad pointers to cmp callback
Tip revision: f015ac3
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