vulnerability
Debian: CVE-2022-28736: grub2 -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:M/Au:M/C:C/I:C/A:C) | Jul 20, 2023 | Jul 30, 2024 | Aug 15, 2025 |
Severity
6
CVSS
(AV:L/AC:M/Au:M/C:C/I:C/A:C)
Published
Jul 20, 2023
Added
Jul 30, 2024
Modified
Aug 15, 2025
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
debian-upgrade-grub2
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