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.

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.

Security update for MozillaFirefox

Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3 Mozilla: XSS when pasting attacker-controlled data into a contenteditable element Mozilla: Download origin spoofing via redirect Mozilla: When recursing through layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free scenario

Security update for MozillaFirefox

Affected: Ubuntu:16.04:LTS: firefox, Ubuntu:18.04:LTS: firefox, Ubuntu:18.04:LTS: thunderbird, Ubuntu:18.04:LTS: mozjs52, Ubuntu:18.04:LTS: mozjs38, Ubuntu:20.04:LTS: firefox, Ubuntu:20.04:LTS: mozjs68, Ubuntu:20.04:LTS: mozjs52

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.