CVE ID:	CVE-2020-15678
Description:	When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
Test IDs:	1.3.6.1.4.1.25623.1.0.853550   1.3.6.1.4.1.25623.1.1.4.2020.3091.1   1.3.6.1.4.1.25623.1.0.853536
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2020-15678 Debian Security Information: DSA-4770 (Google Search) https://www.debian.org/security/2020/dsa-4770 https://security.gentoo.org/glsa/202010-02 https://bugzilla.mozilla.org/show_bug.cgi?id=1660211 https://bugzilla.mozilla.org/show_bug.cgi?id=1660211 https://www.mozilla.org/security/advisories/mfsa2020-42/ https://www.mozilla.org/security/advisories/mfsa2020-42/ https://www.mozilla.org/security/advisories/mfsa2020-43/ https://www.mozilla.org/security/advisories/mfsa2020-43/ https://www.mozilla.org/security/advisories/mfsa2020-44/ https://www.mozilla.org/security/advisories/mfsa2020-44/ https://lists.debian.org/debian-lts-announce/2020/10/msg00020.html SuSE Security Announcement: openSUSE-SU-2020:1780 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.html SuSE Security Announcement: openSUSE-SU-2020:1785 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.html