CVE-2020-26972 — Use After Free in Mozilla Firefox
Severity
9.8CRITICALNVD
OSV6.5
EPSS
0.5%
top 33.22%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 7
Latest updateMay 24
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9
Affected Packages5 packages
🔴Vulnerability Details
3GHSA▶
GHSA-46vq-m3cv-fvrh: 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 de↗2022-05-24
OSV▶
CVE-2020-26972: 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 de↗2020-12-15