CVE-2006-6397: Freebsd

Medium severity, CVSS 4.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Integer overflow in banner/banner.c in FreeBSD, NetBSD, and OpenBSD might allow local users to modify memory via a long banner. NOTE: CVE and multiple third parties dispute this issue. Since banner is not setuid, an exploit would not cross privilege boundaries in normal operations. This issue is not a vulnerability

Affected products

• Freebsd Freebsd: version 6.2 only
• Netbsd Netbsd: version 2.0.4 only
• OpenBSD OpenBSD: any version

Published 2006-12-08. Last modified 2026-06-16.