# CVE-2003-0643

## Summary

- **CVE ID:** CVE-2003-0643
- **Severity:** UNKNOWN
- **CVSS Score:** 0
- **CWE:** N/A
- **Published:** Apr 15, 2005
- **Last Modified:** Mar 16, 2026

## 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).

## Affected Products

- n/a — n/a (n/a)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.08%
- **EPSS Percentile:** 23.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._