The ProcSetEventMask function in difs/events.c in the xfs font server
for X.Org X11R6 through X11R6.6 and XFree86 before 3.3.3 calls the
SendErrToClient function with a mask value instead of a pointer, which
allows local users to cause a denial of service (memory corruption and
crash) or obtain potentially sensitive information from memory via a
SetEventMask request that triggers an invalid pointer dereference.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[xorg-announce] 20120724 X.Org security advisory: DoS/info leak in xfs prior to X11R6.7/XFree86 3.3.3
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