Since Linux 6.9, LUKS suspend stopped wiping disk-encryption keys from memory

mathstodon.xyz

July 2, 2026

1 min read

🔥🔥🔥🔥🔥

68/100

Summary

Mastodon web application requires JavaScript to function properly. Users can also opt for native apps available for their platform.

Key Takeaways

The Mastodon web application requires JavaScript to function properly.
Users are encouraged to use native apps for Mastodon on their respective platforms.

Coverage & discussions

Hacker News · mathstodon.xyz

Historical count: 5 · 5 saved in sample · Historical sample

Analysis ready

Community Sentiment

Mixed

Positives

The introduction of a test for this bug is a significant step towards improving security in Linux, as it helps prevent similar regressions in the future.
Debian's cryptsetup-suspend extension demonstrates innovative thinking in enhancing security, even if it is not officially supported by the main kernel.
The discussion around memory encryption techniques highlights the importance of defense-in-depth strategies in securing sensitive data against physical attacks.

Concerns

The fact that critical security bugs arise from simple oversights in a large codebase raises serious concerns about the reliability of open-source software.
The ongoing presence of the encryption key in memory during suspend poses a significant security risk, which could be exploited by anyone with physical access to the device.
Relying on extensions like cryptsetup-suspend for security is problematic, as it indicates a lack of robust support in the main kernel, potentially leaving users vulnerable.