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(parent: 1391831) | patch
io_uring: prevent opcode speculation
authorPavel Begunkov <asml.silence@gmail.com>
Fri, 14 Feb 2025 22:48:15 +0000 (22:48 +0000)
committerJens Axboe <axboe@kernel.dk>
Sat, 15 Feb 2025 15:15:12 +0000 (08:15 -0700)
commit1e988c3fe1264708f4f92109203ac5b1d65de50b
tree5ea96e92ab715b4e08700c9194164ad8f10775f6tree
parent13918315c5dc5a515926c8799042ea6885c2b734commit | diff
io_uring: prevent opcode speculation

sqe->opcode is used for different tables, make sure we santitise it
against speculations.

Cc: stable@vger.kernel.org
Fixes: d3656344fea03 ("io_uring: add lookup table for various opcode needs")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Li Zetao <lizetao1@huawei.com>
Link: https://lore.kernel.org/r/7eddbf31c8ca0a3947f8ed98271acc2b4349c016.1739568408.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
io_uring/io_uring.c diff | blob | history
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