M5 Pro - macOS Tahoe 26.4.1 crashes almost immediately after connecting to a VPN

Hello Everyone,

Like probably several other Enterprise customers and more, we have been bitten by a bug with regards to VPN and Endpoint Security and the new M5 / M5 Pro SoCs shipping in the latest MacBook devices.

I have raised the following feedback IDFB22753954 (which itself references an internal issue I believe, if we need to mark it as a dupe: 172793638 ).

The technical sequence leading to the crash is as follows I believe:

  1. The macOS system process neagent successfully initializes the GlobalProtect network extension.
  2. The GP Network extension transitions from an 'inactive' state to a 'running' state.
  3. As network traffic begins flowing through the extension, a critical flaw in the macOS kernel's memory allocation (specifically related to the Apple Network Extension framework) is triggered.
  4. This memory management failure at the kernel level results in a kernel panic at an unpredictable point during packet processing.

Because this is a core operating system vulnerability, any third-party application or security solution that leverages Apple's Network Extension framework is susceptible to these crashes. This has been confirmed across multiple vendors within the cybersecurity industry from what I understand.

Thank you in advance for your help!

Kind Regards,

Goffredo

Sometimes, if I reboot the machine and close ALL of the open programs and connect to the VPN it will not crash, but again not sure if it is just luck of the draw or anything...

M5 Pro - macOS Tahoe 26.4.1 crashes almost immediately after connecting to a VPN
 
 
Q