CVE-2012-1699: X X.org x11

Low severity, CVSS 3.6. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• X X.org x11: version 6.0 only; version 6.1 only; version 6.3 only; version 6.4 only; version 6.5.1 only; version 6.6 only
• XFREE86 XFREE86: up to and including 3.3.2

Published 2012-12-21. Last modified 2026-06-16.