Undecimus: [IMPORTANT] Symbolic links are broken when not using ldrestart & launchd. Creating many issues

Created on 27 Feb 2019 · 7Comments · Source: pwn20wndstuff/Undecimus

Jailbreaking with any of the following beta versions results in the following.

b29 & b42*
b30 - b41

The main problem: The breaking CSSymbolicatorRef's in dynamic libraries

An Example of Symbolic linkage just crashing is below

FAULT: com.apple.MobileSMS
Opening message app and sending the following crashes the app entirely

Using the microphone to send a voice text
Typing long messages with using emoji's
Having night mode activate and deactivate.

Steps to reproduce this problem

Step one: Open imessage
Step two: Go to an imessage contact (will not work with a text or a user who has turned off imessages)
Step three: click the microphone icon and try recording a voice message.

Video of the crashes happening
b30 footage

b31 footage

https://www.youtube.com/watch?v=8r6Snk8WyNY&feature=youtu.be

Does this persist in stock iOS?

No, This does not result after rebooting the device and not being jailbroken.

BUG NOTES
Note: This crash can be halted by selecting another individual in your imessage contacts and holding the microphone button, and once un-held the application results in a crash.

Miscellaneous Notes.

Using b29 or b42 (with Mach_swap) allows the use of the microphone by holding, but sends whatever is recorded when application crashes.
This is breaking anything using symbolic linkage.
However using b30 through the recent b41 release completely crashes upon clicking or holding. This issue is still present.

Root Causes

Error Formulating Crash Report: Failed to create CSSymbolicatorRef

The Problem and why this is potentially happening

It means that it can't link to a dynamic library. The most likely reason for this is that the offending executable was compiled against an incompatible SDK