View at Official debian advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2021-4122 not yet assigned priority: Debian including 1 source packages (cryptsetup), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.
It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.