1 files changed, 33 insertions, 0 deletions
diff --git a/package/spice/0003-main-channel-Prevent-overflow-reading-messages-from-.patch b/package/spice/0003-main-channel-Prevent-overflow-reading-messages-from-.patch
new file mode 100644
index 0000000000..f602d5f3b1
--- /dev/null
+++ b/package/spice/0003-main-channel-Prevent-overflow-reading-messages-from-.patch
@@ -0,0 +1,33 @@
+From 5f96b596353d73bdf4bb3cd2de61e48a7fd5b4c3 Mon Sep 17 00:00:00 2001
+From: Frediano Ziglio <fziglio@redhat.com>
+Date: Tue, 29 Nov 2016 16:46:56 +0000
+Subject: [PATCH] main-channel: Prevent overflow reading messages from client
+
+Caller is supposed the function return a buffer able to store
+size bytes.
+
+[Peter: fixes CVE-2016-9577]
+Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
+Acked-by: Christophe Fergeau <cfergeau@redhat.com>
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+---
+ server/main_channel.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/server/main_channel.c b/server/main_channel.c
+index 0ecc9df8..1fc39155 100644
+--- a/server/main_channel.c
++++ b/server/main_channel.c
+@@ -1026,6 +1026,9 @@ static uint8_t *main_channel_alloc_msg_rcv_buf(RedChannelClient *rcc,
+ 
+     if (type == SPICE_MSGC_MAIN_AGENT_DATA) {
+         return reds_get_agent_data_buffer(mcc, size);
++    } else if (size > sizeof(main_chan->recv_buf)) {
++        /* message too large, caller will log a message and close the connection */
++        return NULL;
+     } else {
+         return main_chan->recv_buf;
+     }
+-- 
+2.11.0
+