CVE-2020-26972
Critical
Description
The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 84.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedJan 7, 2021
First seenJan 7, 2021
How to fix
Update
- mozilla firefox84.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 84.0 | 84.0 |
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