[Bug 2046844] Re: AppArmor user namespace creation restrictions cause many applications to crash with SIGTRAP

[Philippe]

For testing, here are two apps AppImage need to run with sandbox and fail to start with Ubuntu 24.04:
https://www.ledger.com/ledger-live
https://www.railway.xyz/#download
Returns:
.....FATAL:setuid_sandbox_host.cc(158)]
The SUID sandbox helper binary was found, but is not configured correctly.
Rather than run without sandboxing I'm aborting now. You need to make sure that /.... is owned by root and has mode 4755.
Trace/breakpoint trap (core dumped)

I'll test your patchs with these apps in virtual machine with 24.04 and
provide to results here.

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https://bugs.launchpad.net/bugs/2046844

Title:
  AppArmor user namespace creation restrictions cause many applications
  to crash with SIGTRAP

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