Low: grub2

Issue Overview:

A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not be removed and may fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks. (CVE-2024-1048)

Affected Packages:

grub2

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update grub2 to update your system.

New Packages:

aarch64:  
    grub2-2.06-14.amzn2.0.3.aarch64  
    grub2-tools-2.06-14.amzn2.0.3.aarch64  
    grub2-tools-minimal-2.06-14.amzn2.0.3.aarch64  
    grub2-tools-extra-2.06-14.amzn2.0.3.aarch64  
    grub2-efi-aa64-2.06-14.amzn2.0.3.aarch64  
    grub2-efi-aa64-ec2-2.06-14.amzn2.0.3.aarch64  
    grub2-efi-aa64-cdboot-2.06-14.amzn2.0.3.aarch64  
    grub2-emu-2.06-14.amzn2.0.3.aarch64  
    grub2-emu-modules-2.06-14.amzn2.0.3.aarch64  
    grub2-debuginfo-2.06-14.amzn2.0.3.aarch64  
  
noarch:  
    grub2-common-2.06-14.amzn2.0.3.noarch  
    grub2-efi-x64-modules-2.06-14.amzn2.0.3.noarch  
    grub2-pc-modules-2.06-14.amzn2.0.3.noarch  
    grub2-efi-aa64-modules-2.06-14.amzn2.0.3.noarch  
  
src:  
    grub2-2.06-14.amzn2.0.3.src  
  
x86_64:  
    grub2-2.06-14.amzn2.0.3.x86_64  
    grub2-tools-2.06-14.amzn2.0.3.x86_64  
    grub2-tools-efi-2.06-14.amzn2.0.3.x86_64  
    grub2-tools-minimal-2.06-14.amzn2.0.3.x86_64  
    grub2-tools-extra-2.06-14.amzn2.0.3.x86_64  
    grub2-efi-x64-2.06-14.amzn2.0.3.x86_64  
    grub2-efi-x64-ec2-2.06-14.amzn2.0.3.x86_64  
    grub2-efi-x64-cdboot-2.06-14.amzn2.0.3.x86_64  
    grub2-pc-2.06-14.amzn2.0.3.x86_64  
    grub2-emu-2.06-14.amzn2.0.3.x86_64  
    grub2-emu-modules-2.06-14.amzn2.0.3.x86_64  
    grub2-debuginfo-2.06-14.amzn2.0.3.x86_64  

Additional References

Red Hat: CVE-2024-1048

Mitre: CVE-2024-1048