Linux 6.9 bug leaves disk-encryption keys in memory during LUKS suspend

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A security flaw introduced in Linux kernel version 6.9 causes LUKS suspend to stop wiping disk-encryption keys from system memory. This means that when a system is suspended, sensitive cryptographic keys remain exposed in RAM rather than being securely cleared. The issue poses a potential risk to users relying on LUKS full-disk encryption for data protection during suspend states. The vulnerability was flagged by a security researcher and discussed on Hacker News, drawing attention from the Linux community. Users on affected kernel versions may be at risk until a fix is issued.

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