diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2011-08-14 14:05:49 -0700 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2011-08-16 19:11:51 +0000 |
| commit | 8b2a04eeb95212305d3a39170e1c4bc3dbe45e8a (patch) | |
| tree | 383fcc56973c43c7518e99b003c7fb670efe0f3a | |
| parent | 3b6ffe50300f13240e1b46420ad05da1116df410 (diff) | |
scsi: do not overwrite memory on REQUEST SENSE commands with a large buffer
Other scsi_target_reqops commands were careful about not using r->cmd.xfer
directly, and instead always cap it to a fixed length. This was not done
for REQUEST SENSE, and this patch fixes it.
Reported-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
| -rw-r--r-- | hw/scsi-bus.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c index 559d5a470..c3ce7df6a 100644 --- a/hw/scsi-bus.c +++ b/hw/scsi-bus.c @@ -292,7 +292,8 @@ static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) if (req->cmd.xfer < 4) { goto illegal_request; } - r->len = scsi_device_get_sense(r->req.dev, r->buf, req->cmd.xfer, + r->len = scsi_device_get_sense(r->req.dev, r->buf, + MIN(req->cmd.xfer, sizeof r->buf), (req->cmd.buf[1] & 1) == 0); break; default: |