iscsi: Don't blindly use designator length in response for memcpy
commit1439b9c11002348eb80fcd3c90f07bf0f4f088dc
authorFam Zheng <famz@redhat.com>
Fri, 29 Jun 2018 06:03:27 +0000 (29 14:03 +0800)
committerKevin Wolf <kwolf@redhat.com>
Fri, 29 Jun 2018 12:20:56 +0000 (29 14:20 +0200)
tree0cbfeb4b9c895027927b85690eefd4cee4056121
parente06f4639d8a93703eecc3aad06c8a3e9b2ef4968
iscsi: Don't blindly use designator length in response for memcpy

Per SCSI definition the designator_length we receive from INQUIRY is 8,
12 or at most 16, but we should be careful because the remote iscsi
target may misbehave, otherwise we could have a buffer overflow.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
block/iscsi.c