CVE-2009-2194: Apple Mac OS X

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

Apple Mac OS X 10.5 before 10.5.8 does not properly share file descriptors over local sockets, which allows local users to cause a denial of service (system crash) by placing file descriptors in messages sent to a socket that has no receiver, related to a "synchronization issue."

Affected products

• Apple Mac OS X: version 10.5.6 only; version 10.5 only; version 10.5.0 only; version 10.5.1 only; version 10.5.2 only; version 10.5.3 only; …
• Apple Mac OS X Server: version 10.5 only; version 10.5.0 only; version 10.5.1 only; version 10.5.2 only; version 10.5.3 only; version 10.5.4 only; …

Published 2009-08-06. Last modified 2026-06-16.