Grub2: use-after-free in grub_file_close()
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…
Severity medium: primary CNA CVSS 4.9 v3.1 (worst CNA-provided scenario) Not listed in this KEV snapshot. Forecast present in this snapshot.
Published 2025-11-18T18:20:40.350Z. Updated 2026-09-01T11:53:34.202Z.