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Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86')
-rw-r--r--nx-X11/programs/Xserver/hw/xfree86/common/xf86MiscExt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/common/xf86MiscExt.c b/nx-X11/programs/Xserver/hw/xfree86/common/xf86MiscExt.c
index 54c0cd510..de4802744 100644
--- a/nx-X11/programs/Xserver/hw/xfree86/common/xf86MiscExt.c
+++ b/nx-X11/programs/Xserver/hw/xfree86/common/xf86MiscExt.c
@@ -647,6 +647,10 @@ MiscExtPassMessage(int scrnIndex, const char *msgtype, const char *msgval,
DEBUG_P("MiscExtPassMessage");
+ /* should check this in the protocol, but xf86NumScreens isn't exported */
+ if (scrnIndex >= xf86NumScreens)
+ return BadValue;
+
if (*pScr->HandleMessage == NULL)
return BadImplementation;
return (*pScr->HandleMessage)(scrnIndex, msgtype, msgval, retstr);