# All that stands between a hacker and admin privileges on some Linux distros is a 257-character long string of literally anything

- URL: https://talkfuse.com/story/all-that-stands-between-a-hacker-and-admin-privileges-on-some-linux-distros-is-a-257-character-long-string-of-literally-anything/
- Published: 2026-11-06T17:31:29+00:00
- Updated: 2026-11-06T18:54:16+00:00
- Original publisher: PC Gamer
- Original article: https://www.pcgamer.com/software/linux/all-that-stands-between-a-hacker-and-admin-privileges-on-some-linux-distros-is-a-257-character-long-string-of-literally-anything/
- Topics: Cybersecurity, Technology

## Key points

- A narrow SSH authentication flaw can grant root access.
- It affects some musl-based systems with PAM disabled.
- OpenSSH has issued a workaround.

## Summary

A flaw in a small number of Linux systems could let someone bypass SSH password authentication and gain root access by entering an unusually long string of characters. OpenSSH has issued a workaround, and the issue does not affect SSH generally, but it matters because SSH is widely used to manage computers remotely.

The vulnerability applies to systems using the musl C library where the SSH server runs without PAM support. The bypass involves passwords between 257 and 1,024 characters; Alpine Linux is a prominent example of a distro using musl, though it is only affected if the other conditions are met. Systems using glibc, or SSH servers with PAM enabled, are not affected according to the article.

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Summarised by TalkFuse (https://talkfuse.com/). Quote the original publisher for the reporting and link this page for the summary and discussion.