CVE-2015-4475: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 4.8% chance of exploitation in the next 30 days.

The mozilla::AudioSink function in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 mishandles inconsistent sample formats within MP3 audio data, which allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via a malformed file.

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
• Opensuse Opensuse: version 13.1 only; version 13.2 only

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