CVE-2013-5616: Canonical Ubuntu Linux

Critical severity, CVSS 9.8. EPSS: 6.7% chance of exploitation in the next 30 days.

Use-after-free vulnerability in the nsEventListenerManager::HandleEventSubType function in Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors related to mListeners event listeners.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 12.10 only; version 13.04 only; version 13.10 only
• Fedoraproject Fedora: version 18 only; version 19 only; version 20 only
• Mozilla Firefox: before 26.0 (fixed in 26.0); from 24.0, before 24.2 (fixed in 24.2)
• Mozilla Seamonkey: before 2.23 (fixed in 2.23)
• Mozilla Thunderbird: before 24.2 (fixed in 24.2)
• Opensuse Opensuse: version 12.2 only; version 12.3 only; version 13.1 only
• Red Hat Enterprise Linux Desktop: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Eus: version 6.5 only
• Red Hat Enterprise Linux Server: version 5.0 only; version 6.0 only
• Red Hat Enterprise Linux Server Aus: version 6.5 only
• Red Hat Enterprise Linux Server Eus: version 6.5 only
• Red Hat Enterprise Linux Server Tus: version 6.5 only
• Red Hat Enterprise Linux Workstation: version 5.0 only; version 6.0 only
• Suse Suse Linux Enterprise Desktop: version 11 only
• Suse Suse Linux Enterprise Server: version 11 only
• Suse Suse Linux Enterprise Software Development Kit: version 11.0 only

Published 2013-12-11. Last modified 2026-06-16.