diff options
| author | Dylan Yudaken <dylany@fb.com> | 2022-04-12 19:30:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-20 10:34:12 +0300 |
| commit | 9947548d9cef58f6be28b7bb0be53138626ff319 (patch) | |
| tree | a3637459412a73eaf5e060a5d5eaf6cbd4fe468a /fs | |
| parent | 7a7c9f9de9616af339c0f59ccdcb43b996c0bf5c (diff) | |
| download | linux-9947548d9cef58f6be28b7bb0be53138626ff319.tar.xz | |
io_uring: verify pad field is 0 in io_get_ext_arg
[ Upstream commit d2347b9695dafe5c388a5f9aeb70e27a7a4d29cf ]
Ensure that only 0 is passed for pad here.
Fixes: c73ebb685fb6 ("io_uring: add timeout support for io_uring_enter()")
Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220412163042.2788062-5-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 66671c0bd864..cc0a07a9fe9c 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -9981,6 +9981,8 @@ static int io_get_ext_arg(unsigned flags, const void __user *argp, size_t *argsz return -EINVAL; if (copy_from_user(&arg, argp, sizeof(arg))) return -EFAULT; + if (arg.pad) + return -EINVAL; *sig = u64_to_user_ptr(arg.sigmask); *argsz = arg.sigmask_sz; *ts = u64_to_user_ptr(arg.ts); |