mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-15 19:35:25 -05:00
39 lines
1.5 KiB
Diff
39 lines
1.5 KiB
Diff
|
Fixes a potential buffer overflow in the protocol handling.
|
||
|
|
|
||
|
|
https://bugzilla.redhat.com/show_bug.cgi?id=1399566
|
||
|
|
https://access.redhat.com/security/cve/CVE-2016-9578
|
||
|
|
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9578
|
||
|
|
https://security-tracker.debian.org/tracker/CVE-2016-9578
|
||
|
|
|
||
|
|
Patch copied from upstream source repository:
|
||
|
|
|
||
|
|
https://cgit.freedesktop.org/spice/spice/commit/?h=0.12&id=f66dc643635518e53dfbe5262f814a64eec54e4a
|
||
|
|
|
||
|
|
From f66dc643635518e53dfbe5262f814a64eec54e4a Mon Sep 17 00:00:00 2001
|
||
|
|
From: Frediano Ziglio <fziglio@redhat.com>
|
||
|
|
Date: Tue, 13 Dec 2016 14:40:10 +0000
|
||
|
|
Subject: Prevent integer overflows in capability checks
|
||
|
|
|
||
|
|
diff --git a/server/reds.c b/server/reds.c
|
||
|
|
index 86a33d5..9150454 100644
|
||
|
|
--- a/server/reds.c
|
||
|
|
+++ b/server/reds.c
|
||
|
|
@@ -2110,6 +2110,14 @@ static void reds_handle_read_link_done(void *opaque)
|
||
|
|
link_mess->num_channel_caps = GUINT32_FROM_LE(link_mess->num_channel_caps);
|
||
|
|
link_mess->num_common_caps = GUINT32_FROM_LE(link_mess->num_common_caps);
|
||
|
|
|
||
|
|
+ /* Prevent DoS. Currently we defined only 13 capabilities,
|
||
|
|
+ * I expect 1024 to be valid for quite a lot time */
|
||
|
|
+ if (link_mess->num_channel_caps > 1024 || link_mess->num_common_caps > 1024) {
|
||
|
|
+ reds_send_link_error(link, SPICE_LINK_ERR_INVALID_DATA);
|
||
|
|
+ reds_link_free(link);
|
||
|
|
+ return;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
num_caps = link_mess->num_common_caps + link_mess->num_channel_caps;
|
||
|
|
caps = (uint32_t *)((uint8_t *)link_mess + link_mess->caps_offset);
|
||
|
|
|
||
|
|
--
|
||
|
|
cgit v0.10.2
|
||
|
|
|