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(parent: d43e60c) | patch
block: fix use-after-free in disk_part_iter_next
authorMing Lei <ming.lei@redhat.com>
Mon, 21 Dec 2020 04:33:35 +0000 (12:33 +0800)
committerJens Axboe <axboe@kernel.dk>
Tue, 5 Jan 2021 18:35:17 +0000 (11:35 -0700)
commit0ef227dacf89bb9b2f5af5bcec5fb39f3be91bbe
treecbe567d6e39da630210e8b9284cfaed3db72aa91tree | snapshot
parentd43e60c16388a5dfe6cf3355e731bbb1456a2fe6commit | diff
block: fix use-after-free in disk_part_iter_next

Make sure that bdgrab() is done on the 'block_device' instance before
referring to it for avoiding use-after-free.

Cc: <stable@vger.kernel.org>
Reported-by: syzbot+825f0f9657d4e528046e@syzkaller.appspotmail.com
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
block/genhd.c diff | blob | history
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