VULNERABILITY INTELLIGENCE

CVE-2022-28736

CVSS score6.4 MEDIUM
EPSS probability0.29%
CISA KEVNot currently listed
Published2023-07-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-416

Primary references