Red Hat: CVE-2025-0690: grub2: read: Integer overflow may lead to out-of-bounds write (Multiple Advisories)
Description
The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence.
Solution(s)
- redhat-upgrade-grub2-common
- redhat-upgrade-grub2-debuginfo
- redhat-upgrade-grub2-debugsource
- redhat-upgrade-grub2-efi-aa64-modules
- redhat-upgrade-grub2-efi-x64
- redhat-upgrade-grub2-efi-x64-cdboot
- redhat-upgrade-grub2-efi-x64-modules
- redhat-upgrade-grub2-emu-debuginfo
- redhat-upgrade-grub2-pc
- redhat-upgrade-grub2-pc-modules
- redhat-upgrade-grub2-ppc64le-modules
- redhat-upgrade-grub2-tools
- redhat-upgrade-grub2-tools-debuginfo
- redhat-upgrade-grub2-tools-efi
- redhat-upgrade-grub2-tools-efi-debuginfo
- redhat-upgrade-grub2-tools-extra
- redhat-upgrade-grub2-tools-extra-debuginfo
- redhat-upgrade-grub2-tools-minimal
- redhat-upgrade-grub2-tools-minimal-debuginfo
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