Anyone owning a Lenovo notebook should read the accompanying article at this link, the products impacted listing is located at the bottom of the security bulletin. The issues are being tracked as CVE-2022-1890, CVE-2022-1891, CVE-2022-1892 respectively.
Hugh if you track the original CVE-1890/1891/1892 on the MITRE site, it shows the creating date for the CVE's as 2022/05/25 or May 25, 2022. That's my best assessment of the original date for the initial findings.
SA
How I hate tech information documents that are not dated at the top!
This only gives date of release of the fix ..... not always the same.