https://www.bleepingcomputer.com/news/security/android-october-patch-fixes-three-critical-bugs-41-flaws-in-total/

Google has released the Android October security updates, addressing 41 vulnerabilities, all ranging between high and critical severity.

On the 5th of each month, Google releases the complete security patch for the Android OS which contains both the framework and the vendor fixes for that month. As such, this update also incorporates fixes for the 10 vulnerabilities that were addressed in the Security patch level 2021-10-01, released a couple of days back.