CVE-2012-5688: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 10.9% chance of exploitation in the next 30 days.

ISC BIND 9.8.x before 9.8.4-P1 and 9.9.x before 9.9.2-P1, when DNS64 is enabled, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted query.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 12.10 only
• ISC BIND: version 9.8.0 only; version 9.8.1 only; version 9.8.2 only; version 9.8.3 only; version 9.9.0 only; version 9.9.1 only

Published 2012-12-06. Last modified 2026-06-16.