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CVE-2021-29984 Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered…
Description
Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 91 | earliest → < 91 | 91 |
| Thunderbird 78.13 | earliest → < 78.13 | 78.13 |
| Firefox ESR 78.13 | earliest → < 78.13 | 78.13 |
| Firefox 91 | earliest → < 91 | 91 |
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