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Gentoo Linux: CVE-2022-28736: GRUB: Multiple Vulnerabilities

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Gentoo Linux: CVE-2022-28736: GRUB: Multiple Vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
09/25/2022
Created
09/26/2022
Added
09/26/2022
Modified
07/31/2023

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.

Solution(s)

  • gentoo-linux-upgrade-sys-boot-grub

References

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