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Vulnerability Details CVE-2022-28736

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 6.5%
CVSS Severity
CVSS v3 Score 6.4
Products affected by CVE-2022-28736
  • Gnu » Grub2 » Version: 2.00
    cpe:2.3:a:gnu:grub2:2.00
  • Gnu » Grub2 » Version: 2.01
    cpe:2.3:a:gnu:grub2:2.01
  • Gnu » Grub2 » Version: 2.02
    cpe:2.3:a:gnu:grub2:2.02
  • Gnu » Grub2 » Version: 2.04
    cpe:2.3:a:gnu:grub2:2.04
  • Gnu » Grub2 » Version: 2.06
    cpe:2.3:a:gnu:grub2:2.06


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