scsi: sr: Sanity check returned mode data

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commit a00a786251 upstream.

Kefeng Wang discovered that old versions of the QEMU CD driver would
return mangled mode data causing us to walk off the end of the buffer in
an attempt to parse it. Sanity check the returned mode sense data.

Reported-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Martin K. Petersen 2017-03-17 08:47:14 -04:00 • committed by Greg Kroah-Hartman

parent 281e36cbaf

commit c80c158bfe

1 changed files with 4 additions and 2 deletions

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drivers/scsi/sr.c

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