Invalid Pointer Dereference in ProcSetEventMask Function of X.Org X11R6 and XFree86

CVE-2012-1699 · LOW Severity

AV:L/AC:L/AU:N/C:P/I:N/A:P

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.

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