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CVE-2020-15678 When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 81 | earliest → < 81 | 81 |
| Thunderbird 78.3 | earliest → < 78.3 | 78.3 |
| Firefox ESR 78.3 | earliest → < 78.3 | 78.3 |