CVE-2015-4488: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 3.8% chance of exploitation in the next 30 days.

Use-after-free vulnerability in the StyleAnimationValue class in Mozilla Firefox before 40.0, Firefox ESR 38.x before 38.2, and Firefox OS before 2.2 allows remote attackers to have an unspecified impact by leveraging a StyleAnimationValue::operator self assignment.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.04 only
• Mozilla Firefox: up to and including 39.0.3; version 38.0 only; version 38.0.1 only; version 38.0.5 only; version 38.1.0 only
• Mozilla Firefox OS: version 2.1.0 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only
• Oracle Solaris: version 11.3 only

Published 2015-08-16. Last modified 2026-06-17.