Raw disk writes can forge legacy discard markers and silently wipe selected keyed dm-integrity blocks.

The bypass is limited to legacy allow_discards and destroys data rather than disclosing it.

Sources

Code / PoCTags · cryptsetup / cryptsetup · GitLab Secondarydm-integrity — The Linux Kernel documentation

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Every finding here carries a source that was checked before it published. If something is wrong, write to admin@fullchain.sh — corrections are published on the day they affect.

Thursday, September 10, 2026