Show HN: Check for CVE-2026-31431 (copy.fail) without overwriting su

Category: security

Tags: security, cve, proof-of-concept

Score: 3.5/10 (Innovation: 3, Technical: 4, Documentation: 4, Utility: 3)

Supertee is a proof-of-concept Python script to test for the CVE-2026-31431 vulnerability that allows writing to files owned by root by exploiting a kernel bug. It demonstrates a specific security issue, but is niche and minimal in scope.

Target audience: security researchers, system administrators

Repository: https://github.com/bddap/supertee · Python

View on Hacker News