diff options
| author | Yu Kuai <yukuai3@huawei.com> | 2022-12-26 11:06:05 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-12-26 12:09:56 -0700 |
| commit | 246cf66e300b76099b5dbd3fdd39e9a5dbc53f02 (patch) | |
| tree | 710ae2b27578858542cd8aee3e86e8a4d557b650 /net/can/proc.c | |
| parent | fb857b0bb2c7eea22a896c53c849a75437d24ea8 (diff) | |
block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq
Commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'")
will access 'bic->bfqq' in bic_set_bfqq(), however, bfq_exit_icq_bfqq()
can free bfqq first, and then call bic_set_bfqq(), which will cause uaf.
Fix the problem by moving bfq_exit_bfqq() behind bic_set_bfqq().
Fixes: 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'")
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20221226030605.1437081-1-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'net/can/proc.c')
0 files changed, 0 insertions, 0 deletions