Arch Linux Security Advisory ASA-202011-6 ========================================= Severity: Critical Date : 2020-11-10 CVE-ID : CVE-2020-26950 Package : firefox Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1265 Summary ======= The package firefox before version 82.0.3-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 82.0.3-1. # pacman -Syu "firefox>=82.0.3-1" The problem has been fixed upstream in version 82.0.3. Workaround ========== None. Description =========== A use-after-free has been found in Firefox before 82.0.3 where, in certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions. Impact ====== A remote attacker can execute arbitrary code on the affected host. References ========== https://www.mozilla.org/en-US/security/advisories/mfsa2020-49/ https://www.mozilla.org/en-US/security/advisories/mfsa2020-49/#CVE-2020-2695... https://bugzilla.mozilla.org/show_bug.cgi?id=1675905 https://security.archlinux.org/CVE-2020-26950