An issue has been discovered in GitLab CE/EE affecting all versions starting with 8.15 . It was possible to trigger a DOS by using the math feature with a specific formula in issue comments.
https://hackerone.com/reports/1350793
https://gitlab.com/gitlab-org/gitlab/-/issues/341832
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-0489.json