1 files changed, 37 insertions, 0 deletions
diff --git a/extra/source/tigervnc/patches/xorg-server/CVE-2024-0229.03.patch b/extra/source/tigervnc/patches/xorg-server/CVE-2024-0229.03.patch
new file mode 100644
index 000000000..1624ec161
--- /dev/null
+++ b/extra/source/tigervnc/patches/xorg-server/CVE-2024-0229.03.patch
@@ -0,0 +1,37 @@
+From df3c65706eb169d5938df0052059f3e0d5981b74 Mon Sep 17 00:00:00 2001
+From: Peter Hutterer <peter.hutterer@who-t.net>
+Date: Thu, 21 Dec 2023 13:48:10 +1000
+Subject: [PATCH] Xi: when creating a new ButtonClass, set the number of
+ buttons
+
+There's a racy sequence where a master device may copy the button class
+from the slave, without ever initializing numButtons. This leads to a
+device with zero buttons but a button class which is invalid.
+
+Let's copy the numButtons value from the source - by definition if we
+don't have a button class yet we do not have any other slave devices
+with more than this number of buttons anyway.
+
+CVE-2024-0229, ZDI-CAN-22678
+
+This vulnerability was discovered by:
+Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
+---
+ Xi/exevents.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/Xi/exevents.c b/Xi/exevents.c
+index 54ea11a938..e161714682 100644
+--- a/Xi/exevents.c
++++ b/Xi/exevents.c
+@@ -605,6 +605,7 @@ DeepCopyPointerClasses(DeviceIntPtr from, DeviceIntPtr to)
+                 to->button = calloc(1, sizeof(ButtonClassRec));
+                 if (!to->button)
+                     FatalError("[Xi] no memory for class shift.\n");
++                to->button->numButtons = from->button->numButtons;
+             }
+             else
+                 classes->button = NULL;
+-- 
+GitLab
+