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. Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15678 Reference (s):
- DEBIAN:DSA-4770
- URL: https://www.debian.org/security/2020/dsa-4770
- GENTOO:GLSA-202010-02
- URL: https://security.gentoo.org/glsa/202010-02
- https://bugzilla.mozilla.org/show_bug.cgi?id=1660211