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authorPeilin Ye <yepeilin.cs@gmail.com>2020-10-02 10:22:23 -0400
committerJens Axboe <axboe@kernel.dk>2020-10-02 12:01:47 -0600
commit6d53a9fe5a1983490bc14b3a64d49fabb4ccc651 (patch)
tree696e521a32bfb23aa574e8aec1c27394e200a631 /block/partitions
parent632bfb6323799c087fcb4108dfe59518609667a7 (diff)
block/scsi-ioctl: Fix kernel-infoleak in scsi_put_cdrom_generic_arg()
scsi_put_cdrom_generic_arg() is copying uninitialized stack memory to userspace, since the compiler may leave a 3-byte hole in the middle of `cgc32`. Fix it by adding a padding field to `struct compat_cdrom_generic_command`. Cc: stable@vger.kernel.org Fixes: f3ee6e63a9df ("compat_ioctl: move CDROM_SEND_PACKET handling into scsi") Suggested-by: Dan Carpenter <dan.carpenter@oracle.com> Suggested-by: Arnd Bergmann <arnd@arndb.de> Reported-by: syzbot+85433a479a646a064ab3@syzkaller.appspotmail.com Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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