Yes, but no. I'm not sure but:
https://source.android.com/security/bulletin/2019-03-01#2019-03-05-details
Example:
CVE-2019-1986, affecting Android 9; CVE-2019-1987 affecting version 7.0, 7.1.1, 7.1.2, 8.0, 8.1, and 9; and CVE-2019-1988 affecting version 8.0, 8.1, 9.
Was patched in the last...