Cyber Security
Linux “Copy Fail” (CVE-2026-31431): Kernel Privilege Escalation and Container Escape
Disclosed in April 2026, CVE-2026-31431 (Copy Fail) is a local privilege escalation in the Linux kernel AF_ALG / algif_aead path. It affects kernels from 2017–2026 and can break container isolation on a shared host kernel.
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