1 files changed, 10 insertions, 0 deletions
diff --git a/libX11/src/StrKeysym.c b/libX11/src/StrKeysym.c
index e2458fcd0..907db507b 100644
--- a/libX11/src/StrKeysym.c
+++ b/libX11/src/StrKeysym.c
@@ -27,6 +27,7 @@ in this Software without prior written authorization from The Open Group.
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif
+#include <limits.h>
 #include "Xlibint.h"
 #include <X11/Xresource.h>
 #include <X11/keysymdef.h>
@@ -155,6 +156,15 @@ XStringToKeysym(_Xconst char *s)
         return val | 0x01000000;
     }
 
+    if (strlen(s) > 2 && s[0] == '0' && s[1] == 'x') {
+        char *tmp = NULL;
+        val = strtoul(s, &tmp, 16);
+        if (val == ULONG_MAX || (tmp && *tmp != '\0'))
+            return NoSymbol;
+        else
+            return val;
+    }
+
     /* Stupid inconsistency between the headers and XKeysymDB: the former has
      * no separating underscore, while some XF86* syms in the latter did.
      * As a last ditch effort, try without. */