Apple today released iOS 9.1 with minor fixes and improvements. We have bad news for fans
Apple has listed several security patches inin the iOS 9.1 release notes and credits the Pangu team with discovering these vulnerabilities. Here are the vulnerabilities that were fixed in iOS 9.1 used in the Pangu iOS 9 jailbreak – iOS 9.0.2.
configd
Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later
Impact: A malicious application may be able to elevate privileges
Description: A heap based buffer overflow issue existed in the DNS client library. A malicious application with the ability to spoof responses from the local configd service may have been able to cause arbitrary code execution in DNS clients.
CVE-ID
CVE-2015-7015: PanguTeam
Gasgauge
Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue existed in the kernel. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-6979: PanguTeam
This means that Pangu Jailbreak will not work on iOS 9.1. You can still use their tool to jailbreak your device on iOS 9.0.2, 9.0.1 and iOS 9.
It is not known whether these vulnerabilities were fixed by Apple already in iOS 9.1 beta, or whether they discovered them after the release of the Pangu jailbreak last week.
Of course, if you don't want to lose your jailbreak, then you should avoid upgrading to iOS 9.1 and be extremely careful when installing jailbreak tweaks.