CVE-2026-23404: In the Linux kernel, the following vulnerability has been resolved: apparmor: replace recursive profile removal with it

A vulnerability in the Linux kernel's AppArmor security module (a tool that controls what programs can access on a system) causes the system to crash when removing many nested profiles due to stack exhaustion from recursive function calls. The fix replaces the recursive profile removal method with an iterative approach (a method that repeats steps instead of calling itself) that achieves the same result without using excessive memory.