| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 120.0 | 120.0 |
| firefox esr | < 115.5.0 | 115.5.0 |
| thunderbird | < 115.5 | 115.5 |
On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
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