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(parent: 98dfd50) | patch
io_uring: set table->files[i] to NULL when io_sqe_file_register failed
authorJiufei Xue <jiufei.xue@linux.alibaba.com>
Wed, 2 Sep 2020 09:59:39 +0000 (17:59 +0800)
committerJens Axboe <axboe@kernel.dk>
Wed, 2 Sep 2020 15:11:59 +0000 (09:11 -0600)
commit95d1c8e5f801e959a89181a2548a3efa60a1a6ce
tree9bd1f1f50996bbb5518c58605a473150f41eda2ctree | snapshot
parent98dfd5024a2e9e170b85c07078e2d89f20a5dfbdcommit | diff
io_uring: set table->files[i] to NULL when io_sqe_file_register failed

While io_sqe_file_register() failed in __io_sqe_files_update(),
table->files[i] still point to the original file which may freed
soon, and that will trigger use-after-free problems.

Cc: stable@vger.kernel.org
Fixes: f3bd9dae3708 ("io_uring: fix memleak in __io_sqe_files_update()")
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c diff | blob | history
Domain: System / Kernel;