CVE-2004-1056: Linux Kernel

Medium severity, CVSS 6.4. EPSS: 3.3% chance of exploitation in the next 30 days.

Direct Rendering Manager (DRM) driver in Linux kernel 2.6 does not properly check the DMA lock, which could allow remote attackers or local users to cause a denial of service (X Server crash) and possibly modify the video output.

Affected products

• Linux Linux Kernel: version 2.6.0 only; version 2.6.1 only; version 2.6.2 only; version 2.6.3 only; version 2.6.4 only; version 2.6.5 only; …
• Ubuntu Ubuntu Linux: version 4.1 only

Published 2005-01-10. Last modified 2026-06-16.