Loop with unreachable exit condition ('infinite loop') in Linux kernel - CVE-2004-0626

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Main Vulnerability Database Vulnerabilities #VU95654

Loop with unreachable exit condition ('infinite loop') in Linux kernel - CVE-2004-0626

Published: December 6, 2004 / Updated: July 11, 2017


Vulnerability identifier: #VU95654
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2004-0626
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

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.


How to mitigate CVE-2004-0626

Install update from vendor's repository.

Sources