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.
{ "binaries": [ { "binary_version": "81.0+build2-0ubuntu0.16.04.1", "binary_name": "firefox" }, { "binary_version": "81.0+build2-0ubuntu0.16.04.1", "binary_name": "firefox-dev" }, { "binary_version": "81.0+build2-0ubuntu0.16.04.1", "binary_name": "firefox-geckodriver" }, { "binary_version": "81.0+build2-0ubuntu0.16.04.1", "binary_name": "firefox-mozsymbols" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "81.0+build2-0ubuntu0.18.04.1", "binary_name": "firefox" }, { "binary_version": "81.0+build2-0ubuntu0.18.04.1", "binary_name": "firefox-dev" }, { "binary_version": "81.0+build2-0ubuntu0.18.04.1", "binary_name": "firefox-geckodriver" }, { "binary_version": "81.0+build2-0ubuntu0.18.04.1", "binary_name": "firefox-mozsymbols" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-dev" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-gnome-support" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "thunderbird-mozsymbols" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-calendar-timezones" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-gdata-provider" }, { "binary_version": "1:78.8.1+build1-0ubuntu0.18.04.1", "binary_name": "xul-ext-lightning" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "81.0+build2-0ubuntu0.20.04.1", "binary_name": "firefox" }, { "binary_version": "81.0+build2-0ubuntu0.20.04.1", "binary_name": "firefox-dev" }, { "binary_version": "81.0+build2-0ubuntu0.20.04.1", "binary_name": "firefox-geckodriver" }, { "binary_version": "81.0+build2-0ubuntu0.20.04.1", "binary_name": "firefox-mozsymbols" } ], "availability": "No subscription required" }