Red Hat, Inc. (AV:A/AC:M/Au:S/C:C/I:C/A:C)

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) __glXDisp_ReadPixels, (2) __glXDispSwap_ReadPixels, (3) __glXDisp_GetTexImage, (4) __glXDispSwap_GetTexImage, (5) GetSeparableFilter, (6) GetConvolutionFilter, (7) GetHistogram, (8) GetMinmax, (9) GetColorTable, (10) __glXGetAnswerBuffer, (11) __GLX_GET_ANSWER_BUFFER, (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.

Multiple integer overflow flaws were found in the way the X.Org server calculated memory requirements for certain GLX extension requests. A malicious, authenticated client could use either of these flaws to crash the X.Org server or, potentially, execute arbitrary code with root privileges.

https://access.redhat.com/errata/RHSA-2014:1982 [No Types Assigned]

https://access.redhat.com/errata/RHSA-2014:1983 [No Types Assigned]

https://access.redhat.com/security/cve/CVE-2014-8093 [No Types Assigned]

https://bugzilla.redhat.com/show_bug.cgi?id=1168688 [No Types Assigned]