CVE-2025-0684
March 3, 2025, 6:15 p.m.
6.4
Medium
Description
A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's reiserfs fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculations to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result, the grub_reiserfs_read_symlink() will call grub_reiserfs_read_real() with a overflown length parameter, leading to a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution, by-passing secure boot protections.
Product(s) Impacted
| Product | Versions |
|---|---|
| GRUB2 |
|
Weaknesses
CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
Tags
CVSS Score
CVSS Data
- Attack Vector: LOCAL
- Attack Complexity: HIGH
- Privileges Required: HIGH
- Scope: UNCHANGED
- Confidentiality Impact: HIGH
- Integrity Impact: HIGH
- Availability Impact: HIGH
View Vector String
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Date
- Published: March 3, 2025, 6:15 p.m.
- Last Modified: March 3, 2025, 6:15 p.m.
Status : Awaiting Analysis
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
secalert@redhat.com
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.