RHSA-2025:20532 - Security Advisory

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64

Fixes

• BZ - 2346343 - CVE-2024-45777 grub2: grub-core/gettext: Integer overflow leads to Heap OOB Write.
• RHEL-87421 - SBAT support on powerpc [rhel-9.7]
• RHEL-91278 - Bump grub sbat [9.7.0]
• RHEL-108060 - Add sbat entry for centos
• RHEL-44336 - Cannot install RHEL9 systems in UEFI on DDF containers

CVEs

• CVE-2024-45777

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.7_release_notes/index