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| author | Pavel Begunkov <asml.silence@gmail.com> | 2024-11-26 01:34:18 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-11-26 15:59:17 +0100 |
| commit | 0c0a4eae26ac78379d0c1db053de168a8febc6c9 (patch) | |
| tree | 28d7780f016a6b8da7b6ec5d805eac9773e46b58 /io_uring/io_uring.c | |
| parent | io_uring/nop: ensure nop->fd is always initialized (diff) | |
| download | linux-0c0a4eae26ac78379d0c1db053de168a8febc6c9.tar.xz linux-0c0a4eae26ac78379d0c1db053de168a8febc6c9.zip | |
io_uring: check for overflows in io_pin_pages
WARNING: CPU: 0 PID: 5834 at io_uring/memmap.c:144 io_pin_pages+0x149/0x180 io_uring/memmap.c:144
CPU: 0 UID: 0 PID: 5834 Comm: syz-executor825 Not tainted 6.12.0-next-20241118-syzkaller #0
Call Trace:
<TASK>
__io_uaddr_map+0xfb/0x2d0 io_uring/memmap.c:183
io_rings_map io_uring/io_uring.c:2611 [inline]
io_allocate_scq_urings+0x1c0/0x650 io_uring/io_uring.c:3470
io_uring_create+0x5b5/0xc00 io_uring/io_uring.c:3692
io_uring_setup io_uring/io_uring.c:3781 [inline]
...
</TASK>
io_pin_pages()'s uaddr parameter came directly from the user and can be
garbage. Don't just add size to it as it can overflow.
Cc: stable@vger.kernel.org
Reported-by: syzbot+2159cbb522b02847c053@syzkaller.appspotmail.com
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/1b7520ddb168e1d537d64be47414a0629d0d8f8f.1732581026.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/io_uring.c')
0 files changed, 0 insertions, 0 deletions