Memory Management Flaw in Linux Kernel Affects Kernel Security

CVE-2026-23408

What is CVE-2026-23408?

A memory management issue in the Linux kernel's AppArmor subsystem has been identified, where an improper handling of the 'ns_name' variable can lead to a double free condition. This occurs when 'ns_name' is initially assigned, but subsequent operations lead to it being freed twice due to incorrect reference management. The flaw arises from a failure to nullify a pointer after transferring ownership, potentially allowing for unexpected behavior and stability risks. The vulnerability has been addressed in recent kernel updates to improve overall security.

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