Oracle Linux: CVE-2020-14311: ELSA-2020-5786: grub2 security update (IMPORTANT) (Multiple Advisories)
Description
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. A flaw was found in grub2 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 a subsequent heap-based buffer overflow. The highest threat from this vulnerability is to integrity and system availability.
Solution(s)
- oracle-linux-upgrade-grub2
- oracle-linux-upgrade-grub2-efi-aa64
- oracle-linux-upgrade-grub2-efi-aa64-cdboot
- oracle-linux-upgrade-grub2-tools
- oracle-linux-upgrade-grub2-tools-extra
- oracle-linux-upgrade-grub2-tools-minimal
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