From: Kevin Wolf <kwolf@redhat.com>
Date: Mon, 27 Jul 2015 03:42:53 +0000 (-0400)
Subject: ide/atapi: Fix START STOP UNIT command completion (CVE-2015-5154)
X-Git-Tag: qemu-xen-4.4.3~10
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=99559e901d462e7955c077d182bf02d3cdad8e08;p=qemu-xen.git

ide/atapi: Fix START STOP UNIT command completion (CVE-2015-5154)

The command must be completed on all code paths. START STOP UNIT with
pwrcnd set should succeed without doing anything.

upstream-commit-id: 03441c3a4a42beb25460dd11592539030337d0f8

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---

diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
index 05e60b1cdc..f6d66a098b 100644
--- a/hw/ide/atapi.c
+++ b/hw/ide/atapi.c
@@ -879,6 +879,7 @@ static void cmd_start_stop_unit(IDEState *s, uint8_t* buf)
 
     if (pwrcnd) {
         /* eject/load only happens for power condition == 0 */
+        ide_atapi_cmd_ok(s);
         return;
     }