# Linux 6.9 LUKS suspend no longer clears encryption keys from memory

Since Linux kernel 6.9, the LUKS (Linux Unified Key Setup) suspend operation has stopped wiping disk-encryption keys from system memory. This change means encryption keys remain in memory during suspend, potentially exposing them to attackers with physical access. Users relying on LUKS for full-disk encryption should be aware of this security regression.

**Importance:** 4/5

## Sources

### Technology
- [Hacker News](https://mathstodon.xyz/@iblech/116769502749142438) — Thu, 02 Jul 2026 15:25:16 +0000