CVE-2021-23981

Name of the Vulnerable Software and Affected Versions: Firefox ESR versions prior to 78.9 Firefox versions prior to 87 Thunderbird versions prior to 78.9

Description: A texture upload of a Pixel Buffer Object could confuse the WebGL code, leading to memory corruption and potentially causing an information leak or crash.

Recommendations: For Firefox ESR versions prior to 78.9, update to version 78.9 or later. For Firefox versions prior to 87, update to version 87 or later. For Thunderbird versions prior to 78.9, update to version 78.9 or later.