Denial of Service in Unified Shader Compiler in Intel Graphics Drivers before 10.18.x.5056 (aka 15.33.x.5056), 10.18.x.5057 (aka 15.36.x.5057) and 20.19.x.5058 (aka 15.40.x.5058) may allow an unprivileged user to potentially create an infinite loop and crash an application via local access.
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00166.html
https://support.apple.com/kb/HT210722
https://support.apple.com/kb/HT210634
http://www.securityfocus.com/bid/105582