Apple has released an iOS 15.0.2 update that fixes bugs with connecting a MagSafe wallet case with Latitude support, as well as Apple AirTag. In addition, a bug was fixed due to which photos could disappear from the gallery.
The update also fixed one serious security vulnerability that could be exploited by attackers.
This problem was tied to the ability of individual applications to run arbitrary code, with kernel privileges. In the update, the bug was fixed with enhanced memory handling.
Therefore, it is very important that you update to the latest version of iOS.
A source: iMore