df3c65706e
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
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
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