What’s Vulnerable › Vulnerabilities

CVE-2024-45781: Grub2: fs/ufs: oob write in the heap

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-18 · updated 2026-10-21
• Weakness: CWE-787

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.

Affected products

• Red Hat OpenShift Container Platform 4.18: all versions
• Red Hat Enterprise Linux 10: all versions — fixed in 1:2.12-15.el10_0
• Red Hat Enterprise Linux 9: all versions — fixed in 1:2.06-104.el9_6

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 10 1:2.12-15.el10_0; Red Hat Enterprise Linux 9 1:2.06-104.el9_6. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2025:16154
• https://access.redhat.com/errata/RHSA-2025:6990
• https://access.redhat.com/security/cve/CVE-2024-45781
• https://bugzilla.redhat.com/show_bug.cgi?id=2345857

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