CVE-2024-1048

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.

More information : https://access.redhat.com/errata/RHSA-2024:2456

Attack vector : LOCAL
Attack complexity : LOW
Privileges required : LOW
User interaction : NONE
Confidentiality impact : NONE
Integrity impact : NONE
Base score : 3.3
Base severity : LOW
Exploitability score : 1.8
Impact score : 1.4