When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
                
            References
                    | Link | Resource | 
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-0689 | Third Party Advisory | 
| https://bugzilla.redhat.com/show_bug.cgi?id=2346122 | Issue Tracking Third Party Advisory | 
| https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html | Mailing List Vendor Advisory | 
Configurations
                    History
                    12 Aug 2025, 14:15
| Type | Values Removed | Values Added | 
|---|---|---|
| CVSS | v2 : v3 : | v2 : unknown v3 : 6.7 | 
31 Jul 2025, 18:15
| Type | Values Removed | Values Added | 
|---|---|---|
| References | () https://access.redhat.com/security/cve/CVE-2025-0689 - Third Party Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2346122 - Issue Tracking, Third Party Advisory | |
| References | () https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html - Mailing List, Vendor Advisory | |
| First Time | Gnu grub2 Gnu | |
| CPE | cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* | 
05 Mar 2025, 21:15
| Type | Values Removed | Values Added | 
|---|---|---|
| References | 
 | |
| Summary | 
 | 
03 Mar 2025, 15:15
| Type | Values Removed | Values Added | 
|---|---|---|
| New CVE | 
Information
                Published : 2025-03-03 15:15
Updated : 2025-08-12 14:15
NVD link : CVE-2025-0689
Mitre link : CVE-2025-0689
CVE.ORG link : CVE-2025-0689
JSON object : View
Products Affected
                gnu
- grub2
CWE
                
                    
                        
                        CWE-120
                        
            Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
