diff options
Diffstat (limited to 'hw/xfree86/common/xf86MiscExt.c')
| -rw-r--r-- | hw/xfree86/common/xf86MiscExt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/xfree86/common/xf86MiscExt.c b/hw/xfree86/common/xf86MiscExt.c index c1b9c60fc..40c196a3e 100644 --- a/hw/xfree86/common/xf86MiscExt.c +++ b/hw/xfree86/common/xf86MiscExt.c @@ -548,6 +548,10 @@ MiscExtPassMessage(int scrnIndex, const char *msgtype, const char *msgval, { ScrnInfoPtr pScr = xf86Screens[scrnIndex]; + /* 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); |