Vulnerabilities > CVE-2022-28736 - Use After Free vulnerability in GNU Grub2

047910
CVSS 7.8 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
local
low complexity
gnu
CWE-416
NVD
Published: 2023-07-20
Updated: 2024-11-21

Summary

There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.

Vulnerable Configurations

Part Description Count
Application
Gnu
5

Common Weakness Enumeration (CWE)

References