Unscored DSA-4981-1 2 CVEs

firefox-esr - security update

Published Oct 6, 2021 · Updated Mar 9, 2026

Ecosystem: Debian

Fixed packages 2

Release	Package	Fixed in
Debian · 10	firefox-esr	78.15.0esr-1~deb10u1
Debian · 11	firefox-esr	78.15.0esr-1~deb11u1

Vulnerabilities 2

Unscored —

CVE-2021-38496

During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corru…

Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine

Nov 3, 2021
Unscored —

CVE-2021-38500

Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. Some of these bugs showed ev…

Mozilla Firefox Thunderbird Firefox ESR Browsers Debian Ubuntu Alpine

Nov 3, 2021