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CVE-2021-38496 During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory…
Description
During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 91.2 | earliest → < 91.2 | 91.2 |
| Thunderbird 78.15 | earliest → < 78.15 | 78.15 |
| Firefox ESR 91.2 | earliest → < 91.2 | 91.2 |
| Firefox ESR 78.15 | earliest → < 78.15 | 78.15 |
| Firefox 93 | earliest → < 93 | 93 |
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