| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 88.0 | 88.0 |
| firefox esr | < 78.10 | 78.10 |
| thunderbird | < 78.10 | 78.10 |
The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
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