Multiple integer overflows in the GLX extension in XFree86 4.0, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 allow remote authenticated users to cause a denial of service (crash) or possibly execute arbitrary code via a crafted request to the (1) _glXDispReadPixels, (2) _glXDispSwapReadPixels, (3) _glXDispGetTexImage, (4) _glXDispSwapGetTexImage, (5) GetSeparableFilter, (6) GetConvolutionFilter, (7) GetHistogram, (8) GetMinmax, (9) GetColorTable, (10) _glXGetAnswerBuffer, (11) _GLXGETANSWERBUFFER, (12) _glXMap1dReqSize, (13) _glXMap1fReqSize, (14) Map2Size, (15) _glXMap2dReqSize, (16) _glXMap2fReqSize, (17) _glXImageSize, or (18) __glXSeparableFilter2DReqSize function, which triggers an out-of-bounds read or write.
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