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author | Jens Axboe <axboe@fb.com> | 2014-11-19 13:06:22 -0700 |
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committer | Jens Axboe <axboe@fb.com> | 2014-11-19 13:09:07 -0700 |
commit | 5fabcb4c33fe11c7e3afdf805fde26c1a54d0953 (patch) | |
tree | 7a30365f099b4c180bf8fed77842c0d60b4df8a2 /net | |
parent | 7c7f2f2bc9a63f9605a16eabac59fc655dfe7c9a (diff) | |
download | op-kernel-dev-5fabcb4c33fe11c7e3afdf805fde26c1a54d0953.zip op-kernel-dev-5fabcb4c33fe11c7e3afdf805fde26c1a54d0953.tar.gz |
genhd: check for int overflow in disk_expand_part_tbl()
We can get here from blkdev_ioctl() -> blkpg_ioctl() -> add_partition()
with a user passed in partno value. If we pass in 0x7fffffff, the
new target in disk_expand_part_tbl() overflows the 'int' and we
access beyond the end of ptbl->part[] and even write to it when we
do the rcu_assign_pointer() to assign the new partition.
Reported-by: David Ramos <daramos@stanford.edu>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions