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CVE-2021-29981 An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures…
Description
An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 91 | earliest → < 91 | 91 |
| Thunderbird 91 | earliest → < 91 | 91 |
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