| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 60.9.0< 69.0 | 60.9.069.0 |
| firefox esr | ≥ 68.0, < 68.1.0 | 68.1.0 |
| thunderbird | ≥ 68.0, < 68.1.0< 60.9.0 | 68.1.060.9.0 |
A use-after-free vulnerability can occur while manipulating video elements if the body is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.
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