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io_uring: validate timespec for timeout removals

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Like commit f6223ff79966, timeout removal should also validate the
timespec that is being passed in.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Link: https://lore.kernel.org/r/20211129041537.1936270-1-yebin10@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ye Bin 2021-11-29 12:15:37 +08:00 committed by Jens Axboe
parent b6c7db3218
commit 2087009c74
1 changed files with 2 additions and 0 deletions
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2
fs/io_uring.c
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@ -6111,6 +6111,8 @@ static int io_timeout_remove_prep(struct io_kiocb *req,
return -EINVAL;
if (get_timespec64(&tr->ts, u64_to_user_ptr(sqe->addr2)))
return -EFAULT;
if (tr->ts.tv_sec < 0 || tr->ts.tv_nsec < 0)
return -EINVAL;
} else if (tr->flags) {
/* timeout removal doesn't support flags */
return -EINVAL;