5.2 Medium

CVE-2024-45775 Grub2: commands/extcmd: missing check for failed allocation

Description

A flaw was found in grub2 where the grub_extcmd_dispatcher() function calls grub_arg_list_alloc() to allocate memory for the grub's argument list. However, it fails to check in case the memory allocation fails. Once the allocation fails, a NULL point will be processed by the parse_option() function, leading grub to crash or, in some rare scenarios, corrupt the IVT data.

CVSS 3.1 detail

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H

Exploitable with local access to the machine, with an administrator account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector: Local
Attack complexity: High
Privileges required: High
Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: High

Affected products and versions

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 9	Versions not published
Red Hat Enterprise Linux 10	Versions not published
Red Hat Enterprise Linux 7	Versions not published
Red Hat Enterprise Linux 8	Versions not published
Red Hat OpenShift Container Platform 4	Versions not published

References

RHSA-2025:6990 access.redhat.com
access.redhat.com access.redhat.com
RHBZ#2337481 bugzilla.redhat.com

Timeline

Published February 18, 2025
Last modified November 5, 2026

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