According to Google’s Project Zero team, four Android security vulnerabilities were exploited in the wild as zero-day bugs before being patched earlier this month. The four vulnerabilities impact Qualcomm GPU and Arm Mali GPU Driver components. Android users are recommended to install this month’s security updates as soon as possible if they are impacted by these issues. Users who haven’t switched to new devices that still receive monthly security updates might not be able to install these patches. More than 9% of all Android devices are still running Android 8.1 Oreo, and roughly 19% Android Pie 9.0.
Source: https://www.bleepingcomputer.com/news/security/may-android-security-updates-patch-4-zero-days-exploited-in-the-wild/