Forkbomb freeze [XPC Poison]

[cr4zyengineer]

What I expected

The kernel virtualization layer should have killed or managed resources better.

What happened

A fork bomb causes a freeze.

Steps to reproduce

(Do not try this unless you're really sure!)

#include <stdlib.h>
#include <spawn.h>

char **environ;

int main(int argc, char *argv[])
{
    while(1)
    {
        posix_spawn(NULL, argv[0], NULL, NULL, argv, environ);
    }
}

Environment

iPhone 14 Pro
iOS 26.2

[cr4zyengineer]

The problem is not in the proc api

[cr4zyengineer]

the problem is like the duplicated process entry vulnerability caused by LDEProcess.. this is kinda like DNS.. its not DNS, its not DNS, ohh its DNS.

[cr4zyengineer]

How do I know it's poisoning? I got 50 different threads all waiting on a XPC related semaphore

[cr4zyengineer]

Its not LDEProcess, its surely not LDEProcess, there is no way its LDEProcess,

Its.. LDEProcess