GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after exit. This lead to a use-after-free condition, and could possibly lead to secure boot bypass.CreditsMate KukriReferenceshttps://bugs.launchpad.net/ubuntu/+source/grub2-unsigned/+bug/2054127https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-2312https://security.netapp.com/advisory/ntap-20240426-0003/
