Cybersecurity

Samsung KNOX Kernel UAF Exposes Millions of Galaxy Devices

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A use-after-free vulnerability (CVE-2026-20971) in Samsung's KNOX kernel enables untrusted apps to corrupt kernel memory through a race condition in process-integrity tracking, potentially leading to complete device takeover across Galaxy S9 through S25 models. For developers and security teams, the vulnerability demonstrates that kernel-level security mechanisms become attack surfaces themselves—defensive code cannot be assumed safe. Samsung patched the flaw in January 2026, but billions of devices across Android 13-16 remain vulnerable until patched.

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