koekeishiya#725 set protection for stack segment

Mu-L · Nov 23, 2020 · d290835 · d290835
1 parent 4d1b220
commit d290835
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/osax/mach_loader.c b/src/osax/mach_loader.c
@@ -75,6 +75,11 @@ bool mach_loader_inject_payload(pid_t pid)
  return false;
  }
 
+ if (vm_protect(task, stack, stack_size, 0, VM_PROT_READ | VM_PROT_WRITE) != KERN_SUCCESS) {
+ fprintf(stderr, "could not change protection for stack segment\n");
+ return false;
+ }
+
  if (mach_vm_allocate(task, &code, image_size, VM_FLAGS_ANYWHERE) != KERN_SUCCESS) {
  fprintf(stderr, "could not allocate code segment\n");
  return false;