CVEvulnerability
CVE-2020-26972
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-01-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-416
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.
Affected configurations
• mozilla firefox (< 84.0)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1671382 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2020-54/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1671382 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2020-54/ Vendor Advisory