Security Advisory

CVE-2022-28736

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-07-20 00:23:01

Last updated 2025-02-13 16:32:37

Assigner canonical

State PUBLISHED

Description

Theres a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesnt 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 GRUB2s memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.

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