Oracle Linux: CVE-2022-2601: ELSA-2023-12019: grub2 security update (IMPORTANT) (Multiple Advisories)
Description
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism. A flaw was found where a maliciously crafted pf2 font could lead to an out-of-bounds write in grub2. A successful attack can lead to memory corruption and secure boot circumvention.
Solution(s)
- oracle-linux-upgrade-grub2
- oracle-linux-upgrade-grub2-common
- oracle-linux-upgrade-grub2-efi-aa64
- oracle-linux-upgrade-grub2-efi-aa64-cdboot
- oracle-linux-upgrade-grub2-efi-aa64-modules
- oracle-linux-upgrade-grub2-efi-ia32
- oracle-linux-upgrade-grub2-efi-ia32-cdboot
- oracle-linux-upgrade-grub2-efi-ia32-modules
- oracle-linux-upgrade-grub2-efi-x64
- oracle-linux-upgrade-grub2-efi-x64-cdboot
- oracle-linux-upgrade-grub2-efi-x64-modules
- oracle-linux-upgrade-grub2-pc
- oracle-linux-upgrade-grub2-pc-modules
- oracle-linux-upgrade-grub2-tools
- oracle-linux-upgrade-grub2-tools-efi
- oracle-linux-upgrade-grub2-tools-extra
- oracle-linux-upgrade-grub2-tools-minimal
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