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author | Jinbum Park <jinb.park7@gmail.com> | 2018-07-28 13:20:44 +0900 |
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committer | Jens Axboe <axboe@kernel.dk> | 2018-07-28 09:08:42 -0600 |
commit | 55690c07b44a82cc3359ce0c233f4ba7d80ba145 (patch) | |
tree | 1e73133269563bae2dd59e2790da18ee72618e18 /drivers/scsi | |
parent | d43fdae7bac2def8c4314b5a49822cb7f08a45f1 (diff) |
pktcdvd: Fix possible Spectre-v1 for pkt_devs
User controls @dev_minor which to be used as index of pkt_devs.
So, It can be exploited via Spectre-like attack. (speculative execution)
This kind of attack leaks address of pkt_devs, [1]
It leads an attacker to bypass security mechanism such as KASLR.
So sanitize @dev_minor before using it to prevent attack.
[1] https://github.com/jinb-park/linux-exploit/
tree/master/exploit-remaining-spectre-gadget/leak_pkt_devs.c
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/scsi')
0 files changed, 0 insertions, 0 deletions