CVE-2016-8605: Fedoraproject Fedora

Medium severity, CVSS 5.3. EPSS: 2.8% chance of exploitation in the next 30 days.

The mkdir procedure of GNU Guile temporarily changed the process' umask to zero. During that time window, in a multithreaded application, other threads could end up creating files with insecure permissions. For example, mkdir without the optional mode argument would create directories as 0777. This is fixed in Guile 2.0.13. Prior versions are affected.

Affected products

• Fedoraproject Fedora: version 23 only; version 24 only; version 25 only
• GNU Guile: up to and including 2.0.12

Published 2017-01-12. Last modified 2026-06-17.