RHSA-2025:20532 — Security Advisory
Red Hat Security Advisory: grub2 security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · November 11, 2025
Updated · October 22, 2026
Topic
An update for grub2 is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices.
Security Fix(es):
- grub2: grub-core/gettext: Integer overflow leads to Heap OOB Write. (CVE-2024-45777)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.