Fix for buffer overflow in ldm_frag_add not sufficient
authorTimo Warns <Warns@pre-sense.de>
Thu, 19 May 2011 07:24:17 +0000 (09:24 +0200)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 20 May 2011 23:40:36 +0000 (16:40 -0700)
commitcae13fe4cc3f24820ffb990c09110626837e85d4
treedb3722f6c3ffc142eb3b931fb41b34d8dab3eaa7
parente6c9366b2adb52cba64b359b3050200743c7568c
Fix for buffer overflow in ldm_frag_add not sufficient

As Ben Hutchings discovered [1], the patch for CVE-2011-1017 (buffer
overflow in ldm_frag_add) is not sufficient.  The original patch in
commit c340b1d64000 ("fs/partitions/ldm.c: fix oops caused by corrupted
partition table") does not consider that, for subsequent fragments,
previously allocated memory is used.

[1] http://lkml.org/lkml/2011/5/6/407

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Timo Warns <warns@pre-sense.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/partitions/ldm.c