CVE-2004-0626

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.

• 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

Published

Dec 6, 2004

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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