CVE-2024-45776

Grub2: grub-core/gettext: integer overflow leads to heap oob write and read.

Description

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.

Remediation

Workaround:

  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 10
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat OpenShift Container Platform 4
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2025:6990 vendor advisory
https://access.redhat.com/security/cve/CVE-2024-45776 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2339182 issue tracking

Frequently Asked Questions

What is the severity of CVE-2024-45776?
CVE-2024-45776 has been scored as a medium severity vulnerability.
How to fix CVE-2024-45776?
As a workaround for remediating CVE-2024-45776: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Is CVE-2024-45776 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-45776 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-45776?
CVE-2024-45776 affects Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 10, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat OpenShift Container Platform 4.
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