Use After Free Affecting firefox package, versions <84.0-1
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-1051639
- published 16 Dec 2020
- disclosed 7 Jan 2021
Introduced: 16 Dec 2020
CVE-2020-26972 Open this link in a new tabHow to fix?
Upgrade Debian:unstable
firefox
to version 84.0-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox
package and not the firefox
package as distributed by Debian
.
See How to fix?
for Debian:unstable
relevant fixed versions and status.
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.