| commit | a86ed8caf2fda2069ed910b42f80d7e7b7bc49d1 | |
| author | Mikulas Patocka <mpatocka@redhat.com> | |
| Sat, 23 Nov 2013 00:52:06 +0000 (22 19:52 -0500) | ||
| committer | Ben Hutchings <ben@decadent.org.uk> | |
| Fri, 3 Jan 2014 04:33:29 +0000 (3 04:33 +0000) | ||
| tree | ba9014a0cb375d89d59c8363e6261f0aca7ee975 | treesnapshot (tar.gz zip) |
| parent | 8bd981aa4b609d3c97fceb4d81b212b68952b29c | commitdiff |
dm table: fail dm_table_create on dm_round_up overflow
commit 5b2d06576c5410c10d95adfd5c4d8b24de861d87 upstream.
The dm_round_up function may overflow to zero. In this case,
dm_table_create() must fail rather than go on to allocate an empty array
with alloc_targets().
This fixes a possible memory corruption that could be caused by passing
too large a number in "param->target_count".
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
commit 5b2d06576c5410c10d95adfd5c4d8b24de861d87 upstream.
The dm_round_up function may overflow to zero. In this case,
dm_table_create() must fail rather than go on to allocate an empty array
with alloc_targets().
This fixes a possible memory corruption that could be caused by passing
too large a number in "param->target_count".
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| drivers/md/dm-table.c | diffblobblamehistory |