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Copy Fail: Critical Linux Kernel Vulnerability (CVE-2026-31431) Grants Root Access Across Major Distributions

Xint Code disclosed CVE-2026-31431, an authencesn scratch-write bug chaining AF_ALG + splice() into a 4-byte page cache write. A 732-byte PoC gets root on Ubuntu, Amazon Linux, RHEL, SUSE.

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eyalitki2mo ago13 min readenInsight

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Ubuntu and Linux Kernel: Linux FUSE Vulnerability Allows Unprivileged Users to Pop a Root Shell

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Linux Copy Fail zero-day enables privilege escalation

Copy Fail, a zero-day Linux vulnerability, is a local privilege escalation flaw that allows unprivileged users to gain root access.

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Linux Kernel: Linux Kernel FUSE Vulnerability Lets Attackers Gain Root Privileges

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Critical Linux Kernel Flaw CVE-2026-46331 (Pedit COW) Enables Unprivileged Users to Gain Root Access via Cache Poisoning

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