| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 60.2.0< 62.0 | 60.2.062.0 |
| thunderbird | < 60.2.1 | 60.2.1 |
A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances during shutdown when the timer is deleted while still in use. This results in a potentially exploitable crash. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.
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