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.
{
"binaries": [
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-common"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-coreboot"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-coreboot-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi-amd64"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi-amd64-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi-arm"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi-arm-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi-arm64"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi-arm64-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi-ia32"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-efi-ia32-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-emu"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-firmware-qemu"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-ieee1275"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-ieee1275-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-linuxbios"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-pc"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-pc-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-rescue-pc"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-theme-starfield"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-uboot"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-uboot-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-xen"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub-xen-bin"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub2"
},
{
"binary_version": "2.02~beta2-9ubuntu1.21",
"binary_name": "grub2-common"
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "2.12-1ubuntu7",
"binary_name": "grub-efi-amd64"
},
{
"binary_version": "2.12-1ubuntu7",
"binary_name": "grub-efi-amd64-bin"
},
{
"binary_version": "2.12-1ubuntu7",
"binary_name": "grub-efi-arm64"
},
{
"binary_version": "2.12-1ubuntu7",
"binary_name": "grub-efi-arm64-bin"
}
]
}