CVE-2004-0626

Name: CVE-2004-0626
Creator: NVD / NIST
Published: 2004-12-06T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.76%

Last modified Jun 16, 2026

CVE-2004-0626 is a vulnerability of currently unknown severity. The tcp_find_option function of the netfilter subsystem in Linux kernel 2.6, when using iptables and TCP options rules, allows remote attackers to cause a denial of service (CPU consumption by infinite loop) via a large option length that produces a negative integer after a casting operation to the char type.. EPSS estimates a 2.76% chance of exploitation in the next 30 days.

Description

The tcp_find_option function of the netfilter subsystem in Linux kernel 2.6, when using iptables and TCP options rules, allows remote attackers to cause a denial of service (CPU consumption by infinite loop) via a large option length that produces a negative integer after a casting operation to the char type.

Metrics

EPSS Probability

2.76%

84.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Conectiva	Linux	10
Gentoo	Linux	All versions
Linux	Linux Kernel	2.6.0
Suse	Suse Linux	8.0
Suse	Suse Linux	8.1
Suse	Suse Linux	8.2
Suse	Suse Linux	9.0
Suse	Suse Linux	9.1

References

http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000852Patch, Vendor Advisory
http://lwn.net/Articles/91964/Patch, Vendor Advisory
http://marc.info/?l=bugtraq&m=108861141304495&w=2
http://www.gentoo.org/security/en/glsa/glsa-200407-12.xmlPatch, Vendor Advisory
http://www.novell.com/linux/security/advisories/2004_20_kernel.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/16554
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000852Patch, Vendor Advisory
http://lwn.net/Articles/91964/Patch, Vendor Advisory
http://marc.info/?l=bugtraq&m=108861141304495&w=2
http://www.gentoo.org/security/en/glsa/glsa-200407-12.xmlPatch, Vendor Advisory
http://www.novell.com/linux/security/advisories/2004_20_kernel.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/16554

Timeline

Published: Dec 6, 2004
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2004-0626?

How severe is CVE-2004-0626?

Severity scoring for CVE-2004-0626 is pending analysis. The EPSS model estimates a 2.76% probability of exploitation in the next 30 days.

How do I fix CVE-2004-0626?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2004-0626?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST