New 'Copy Fail' Flaw In Linux Kernel Lets Any Local User Seize Root Access: Here's How To ...

The flaw allows an unprivileged local user to write four controlled bytes into the page cache of any readable file on a Linux ...
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New Linux 'Copy Fail' Vulnerability Enables Root Access on Major Distributions

CVE-2026-31431 CVSS 7.8 flaw since 2017 enables root via 732-byte exploit, impacting major Linux distributions.