A vulnerability has been reported in X11, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.
The vulnerability is caused due to a buffer size calculation error within the XRender extension triangle handling code. This can be exploited by a client that is authorised to connect to the X server to cause a buffer overflow.
Successful exploitation may allow arbitrary code execution.
The vulnerability has been reported in X11R6.8.x, X11R6.9.0, and X11R7.0 (xorg-server 1.0.x).
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