A use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified Bootloader). The flaw occurs because the file-closing process incorrectly retains a memory pointer, leaving an invalid reference to a file system structure. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.
Exploitability
AV:LAC:HPR:NUI:NScope
S:UImpact
C:LI:LA:L4.9/CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LOther