CVE-2004-1056: Direct Rendering Manager (DRM) driver in Linux kernel 2.6 does not properly check the DMA lock, which could...

Security readout for executives and security teams

CVE-2004-1056 is an old Linux kernel 2.6 DRM driver flaw that could crash the X Server and may alter video output. It mainly matters for legacy systems still running affected kernels or distributions covered by 2005 vendor advisories. The source bundle provides no CVSS score and no evidence of known active exploitation. Exposure is most likely on legacy Linux 2.6 hosts using affected DRM/X Server graphics paths. Modern systems are unlikely to be affected unless they run unmaintained kernels or old enterprise distributions. The bundle lists affected vendor/product as n/a, so exact product mapping requires vendor advisory confirmation. Low immediate urgency for modern environments, but legacy Linux estates should verify patch status. The business risk is service disruption on graphical systems, not confirmed data theft or system takeover from the provided evidence. Mitigation focus: Apply relevant vendor kernel updates from Ubuntu, Red Hat, Fedora, or current distro guidance.; Retire or isolate systems still running Linux kernel 2.6 where updates are unavailable.; Prioritize systems with graphical X Server workloads or exposed remote graphics sessions..

Prepared

Jun 30, 2026, 01:53 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.