There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_name": "grub-common", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-coreboot", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-coreboot-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi-amd64", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi-amd64-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi-arm", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi-arm-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi-arm64", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi-arm64-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi-ia32", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-efi-ia32-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-emu", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-firmware-qemu", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-ieee1275", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-ieee1275-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-linuxbios", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-pc", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-pc-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-rescue-pc", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-theme-starfield", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-uboot", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-uboot-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-xen", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub-xen-bin", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub2", "binary_version": "2.02~beta2-9ubuntu1.20" }, { "binary_name": "grub2-common", "binary_version": "2.02~beta2-9ubuntu1.20" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "grub-common", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-coreboot", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-coreboot-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi-amd64", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi-amd64-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi-arm", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi-arm-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi-arm64", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi-arm64-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi-ia32", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-efi-ia32-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-emu", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-firmware-qemu", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-ieee1275", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-ieee1275-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-linuxbios", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-pc", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-pc-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-rescue-pc", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-theme-starfield", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-uboot", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-uboot-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-xen", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-xen-bin", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub-xen-host", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub2", "binary_version": "2.02~beta2-36ubuntu3.26" }, { "binary_name": "grub2-common", "binary_version": "2.02~beta2-36ubuntu3.26" } ] }
{ "binaries": [ { "binary_name": "grub-efi-amd64", "binary_version": "2.04-1ubuntu44.1.2" }, { "binary_name": "grub-efi-amd64-bin", "binary_version": "2.04-1ubuntu44.1.2" }, { "binary_name": "grub-efi-arm64", "binary_version": "2.04-1ubuntu44.1.2" }, { "binary_name": "grub-efi-arm64-bin", "binary_version": "2.04-1ubuntu44.1.2" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "grub-common", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-coreboot", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-coreboot-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi-amd64", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi-amd64-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi-arm", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi-arm-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi-arm64", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi-arm64-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi-ia32", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-efi-ia32-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-emu", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-firmware-qemu", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-ieee1275", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-ieee1275-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-linuxbios", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-pc", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-pc-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-rescue-pc", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-theme-starfield", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-uboot", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-uboot-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-xen", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-xen-bin", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub-xen-host", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub2", "binary_version": "2.02-2ubuntu8.16" }, { "binary_name": "grub2-common", "binary_version": "2.02-2ubuntu8.16" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "grub-efi-amd64", "binary_version": "2.04-1ubuntu47.4" }, { "binary_name": "grub-efi-amd64-bin", "binary_version": "2.04-1ubuntu47.4" }, { "binary_name": "grub-efi-arm64", "binary_version": "2.04-1ubuntu47.4" }, { "binary_name": "grub-efi-arm64-bin", "binary_version": "2.04-1ubuntu47.4" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "grub-common", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-coreboot", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-coreboot-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-amd64", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-amd64-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-amd64-signed-template", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-arm", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-arm-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-arm64", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-arm64-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-arm64-signed-template", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-ia32", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-efi-ia32-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-emu", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-firmware-qemu", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-ieee1275", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-ieee1275-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-linuxbios", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-pc", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-pc-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-rescue-pc", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-theme-starfield", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-uboot", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-uboot-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-xen", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-xen-bin", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub-xen-host", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub2", "binary_version": "2.04-1ubuntu26.1" }, { "binary_name": "grub2-common", "binary_version": "2.04-1ubuntu26.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "grub-efi-amd64", "binary_version": "2.04-1ubuntu47.4" }, { "binary_name": "grub-efi-amd64-bin", "binary_version": "2.04-1ubuntu47.4" }, { "binary_name": "grub-efi-arm64", "binary_version": "2.04-1ubuntu47.4" }, { "binary_name": "grub-efi-arm64-bin", "binary_version": "2.04-1ubuntu47.4" } ] }