| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 71.0 | 71.0 |
| firefox esr | < 68.3 | 68.3 |
| thunderbird | < 68.3 | 68.3 |
When using nested workers, a use-after-free could occur during worker destruction. This resulted in a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
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