CVE-2024-45781

Grub2: fs/ufs: oob write in the heap

Description

A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent 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 0.04%
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-2024-45781 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2345857 issue tracking

Frequently Asked Questions

What is the severity of CVE-2024-45781?
CVE-2024-45781 has been scored as a medium severity vulnerability.
How to fix CVE-2024-45781?
As a workaround for remediating CVE-2024-45781: 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-2024-45781 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-45781 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-2024-45781?
CVE-2024-45781 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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