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

Since Linux 6.9, a critical security feature in LUKS (Linux Unified Key Setup) has faltered: the system no longer effectively wipes disk-encryption keys from memory when suspending, potentially exposing sensitive data. This oversight in the Linux kernel poses significant risks, particularly for users relying on LUKS to protect their data.

guid

https://news.ycombinator.com/item?id=48763035

source_url

https://mathstodon.xyz/@iblech/116769502749142438

author_name

IngoBlechschmid

id: 4424
uid: XLP6B
insdate: 2026-07-02 20:05:30
title: Since Linux 6.9, LUKS suspend stopped wiping disk-encryption keys from memory
additional: Since Linux 6.9, a critical security feature in LUKS (Linux Unified Key Setup) has faltered: the system no longer effectively wipes disk-encryption keys from memory when suspending, potentially exposing sensitive data. This oversight in the Linux kernel poses significant risks, particularly for users relying on LUKS to protect their data.
category: Hacker News
md5:
guid: https://news.ycombinator.com/item?id=48763035
source_url: https://mathstodon.xyz/@iblech/116769502749142438
updated:
image:
author_name: IngoBlechschmid
author_link:
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