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VulnerabilitiesApr 29, 2026

‼️Copy Fail (CVE-2026-31431) is a Linux privilege escalation bug that lets any local user get roo...

CVE-2026-31431 'Copy Fail' allows local privilege escalation to root on Linux since 2017.

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Summary

CVE-2026-31431, dubbed 'Copy Fail,' is a Linux privilege escalation vulnerability affecting all major distributions released since 2017. The flaw can be exploited by any local user via a 732-byte Python script to gain root access. Public disclosure includes technical write-ups and proof-of-concept code on GitHub.

Indicators of Compromise

  • cve — CVE-2026-31431

Entities

Linux (technology)