CVE-2024-45776

When reading the language .mo file in grub_mofile_open(), grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data, possibly circumventing secure boot protections.

Score

CVSS 3.1 6.7 Medium

Status

Deferred - secalert@redhat.com

Published

2025-02-18

Last modified

2026-10-21

Weaknesses

CWE-787

Affected products

• Enterprise Linux (Redhat)
• Openshift (Redhat)

References

• https://access.redhat.com/errata/RHSA-2025:16154
• https://access.redhat.com/errata/RHSA-2025:6990
• https://access.redhat.com/security/cve/CVE-2024-45776
• https://bugzilla.redhat.com/show_bug.cgi?id=2339182