CVE-2005-1036: Freebsd

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

FreeBSD 5.x to 5.4 on AMD64 does not properly initialize the IO permission bitmap used to allow user access to certain hardware, which allows local users to bypass intended access restrictions to cause a denial of service, obtain sensitive information, and possibly gain privileges.

Affected products

• Freebsd Freebsd: from 5.0, up to and including 5.4

Published 2005-05-02. Last modified 2026-06-16.