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Xi: exevents: NULL protection in ‘DeviceEventSuppressForWindow()

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Protect against `inputMasks` could be NULL.

| ../Xi/exevents.c: In function ‘DeviceEventSuppressForWindow’:
| ../Xi/exevents.c:3246:32: warning: dereference of NULL ‘inputMasks’ [CWE-476] [-Wanalyzer-null-dereference]
|  3246 |         FreeResource(inputMasks->inputClients->resource, X11_RESTYPE_NONE);
|       |                      ~~~~~~~~~~^~~~~~~~~~~~~~

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
This commit is contained in:
Enrico Weigelt, metux IT consult
2025-05-06 17:37:05 +02:00
parent f022f1c764
commit d91121e876
1 changed files with 4 additions and 1 deletions
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5
Xi/exevents.c
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@@ -3241,8 +3241,11 @@ DeviceEventSuppressForWindow(WindowPtr pWin, ClientPtr client, Mask mask,
inputMasks->dontPropagateMask[maskndx] = mask;
}
RecalculateDeviceDeliverableEvents(pWin);
if (ShouldFreeInputMasks(pWin, FALSE))
if (ShouldFreeInputMasks(pWin, FALSE)) {
BUG_RETURN_VAL(!inputMasks, BadImplementation);
BUG_RETURN_VAL(!inputMasks->inputClients, BadImplementation);
FreeResource(inputMasks->inputClients->resource, X11_RESTYPE_NONE);
}
return Success;
}