Learn how to fix Copy Fail (CVE-2026-31431) in Ubuntu and Linux Mint. Copy Fail vulnerability allows any local user gain root access on Linux.
The discoverers have named the root vulnerability "Copy Fail". All major distributions since 2017 are affected.
CVE-2026-31431 CVSS 7.8 flaw since 2017 enables root via 732-byte exploit, impacting major Linux distributions.
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