spice: add upstream security fixes for CVE-2017-7506

Fixes CVE-2017-7506 - Possible buffer overflow via invalid monitor
configurations.

For more details, see:
https://marc.info/?l=oss-security&m=150001782924095

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/package/spice/0005-reds-Avoid-integer-overflows-handling-monitor-config.patch b/package/spice/0005-reds-Avoid-integer-overflows-handling-monitor-config.patch
new file mode 100644
index 0000000000..98740520c1
--- /dev/null
+++ b/package/spice/0005-reds-Avoid-integer-overflows-handling-monitor-config.patch
@@ -0,0 +1,31 @@
+From ec6229c79abe05d731953df5f7e9a05ec9f6df79 Mon Sep 17 00:00:00 2001
+From: Frediano Ziglio <fziglio@redhat.com>
+Date: Mon, 15 May 2017 15:57:28 +0100
+Subject: [PATCH] reds: Avoid integer overflows handling monitor
+ configuration
+
+Avoid VDAgentMessage::size integer overflows.
+
+Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+---
+ server/reds.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/server/reds.c b/server/reds.c
+index 7be85fdf..e1c8c108 100644
+--- a/server/reds.c
++++ b/server/reds.c
+@@ -1024,6 +1024,9 @@ static void reds_on_main_agent_monitors_config(
+         spice_debug("not enough data yet. %d", cmc->buffer_size);
+         return;
+     }
++    if (msg_header->size < sizeof(VDAgentMonitorsConfig)) {
++        goto overflow;
++    }
+     monitors_config = (VDAgentMonitorsConfig *)(cmc->buffer + sizeof(*msg_header));
+     spice_debug("%s: %d", __func__, monitors_config->num_of_monitors);
+     red_dispatcher_client_monitors_config(monitors_config);
+-- 
+2.11.0
+