CVE-2013-1996: X Libfs

Medium severity, CVSS 6.8. EPSS: 1.3% chance of exploitation in the next 30 days.

X.org libFS 1.0.4 and earlier allows X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to an unexpected sign extension in the FSOpenServer function.

Affected products

• X Libfs: up to and including 1.0.4; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only

Published 2013-06-15. Last modified 2026-06-16.