Linux cryptographic code flaw offers fast route to root • The Register

Linux cryptographic code flaw offers fast route to root • The Register

Developers of main Linux distributions have begun delivery patches to tackle an area privilege escalation (LPE) vulnerability arising from a logic flaw. The newly disclosed LPE, dubbed Copy Fail (CVE-2026-31431), comes from a vulnerability within the Linux kernel’s authencesn cryptographic template. “An unprivileged local user can write four controlled bytes into the page cache of…

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