CVE-2007-2443: Canonical Ubuntu Linux

High severity, CVSS 8.3. EPSS: 3.5% chance of exploitation in the next 30 days.

Integer signedness error in the gssrpc__svcauth_unix function in svc_auth_unix.c in the RPC library in MIT Kerberos 5 (krb5) 1.6.1 and earlier might allow remote attackers to execute arbitrary code via a negative length value.

Affected products

• Canonical Ubuntu Linux: version 6.06 only; version 6.10 only; version 7.04 only
• Debian Debian Linux: version 3.1 only; version 4.0 only
• Mit Kerberos 5: up to and including 1.6.1

Published 2007-06-26. Last modified 2026-06-16.