Apple recently released iOS 15.6.1, and as is traditional, Apple has now stopped signing the previous version, iOS 15.6, making downgrading to that version of iOS no longer possible.
Apple earlier this month released iOS 15.6.1. According to Apple’s release notes, the updates include bug fixes and security improvements. iOS 15.6.1 and iPadOS 15.6.1 address kernel and WebKit vulnerabilities that could lead to arbitrary code execution.
iOS 15.6.1 and iPadOS 15.6.1
Released August 17, 2022
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
Apple says that it is aware that these vulnerabilities may have been actively exploited in the wild, so you should apply the update right away.
The new software can be downloaded on compatible devices over the air by going to “Settings” -> “General” -> “Software Update.”
Falling back to an older iOS build is often used by users that jailbreak their iPhones. Restoring an iPhone or iPad to a previous version of iOS can also sometimes be helpful for users who experience significant bugs after upgrading to the latest version of iOS.
