Apple launched iOS 15.6.1 on the 17th of last month. Apple did not make any major changes in this update, but it included a critical security fix that addresses kernel and Webkit vulnerabilities that could lead to arbitrary code execution.
As we all know that iOS 16 is recently launched on the 12th of September and within 1 week of its launch, Apple stopped the signing of the iOS 15.6.1 update from iOS 16. The iOS 16 users can downgrade to iOS 15.7 but this too will be turned off soon.
iOS 15.6.1 Changelog:
Kernel
- Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)
- Impact: An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.
- Description: An out-of-bounds write issue was addressed with improved bounds checking.
- CVE-2022-32894: an anonymous researcher
WebKit
- Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)
- Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
- Description: An out-of-bounds write issue was addressed with improved bounds checking.
- WebKit Bugzilla: 243557
- CVE-2022-32893: an anonymous researcher