| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 52.2.0< 54.0 | 52.2.054.0 |
| thunderbird | < 52.2.0 | 52.2.0 |
A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
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