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A Linux LUKS suspend regression left encryption keys in memory for two years

Ingo Blechschmidt traced the bug to a Linux 6.9 kernel refactor and proposed tests and warnings to stop silent failures.

By Ryan Merket · Published Jul 2nd, 2026, 11:30am CT

Illustration of Linux LUKS encryption keys left in memory after suspend, with Ingo Blechschmidt tracing the bug to a Linux 6.9 kernel refactor.

Ingo Blechschmidt traced the bug to a Linux 6.9 kernel refactor and proposed tests and warnings to stop silent failures.

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