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Oracle Linux: CVE-2020-14311: ELSA-2020-5786: grub2 security update (IMPORTANT) (Multiple Advisories)

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Oracle Linux: CVE-2020-14311: ELSA-2020-5786: grub2 security update (IMPORTANT) (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:H/Au:M/C:N/I:C/A:C)
Published
07/29/2020
Created
08/01/2020
Added
07/30/2020
Modified
11/26/2024

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-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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