CVE-2021-4122 Information

Description

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.

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2031859 https://bugzilla.redhat.com/show_bug.cgi?id=2032401 https://access.redhat.com/security/cve/CVE-2021-4122 https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c