🛡️ CVE-2025-0678 — enterprise-linux
Description
A flaw was found in grub2. When reading data from a squash4 filesystem, grub's squash4 fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciously 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 direct_read() will perform a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution, by-passing secure boot protections.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.
Weakness class
CVE-2025-0678 is classified as CWE-190: Integer Overflow or Wraparound. Arithmetic produces a value too large for its type and wraps around, so a later size or bounds check passes when it should not.
Affected software
CVE-2025-0678 is recorded against 3 packages.
- enterprise-linux
- grub2 (fixed in 2.12)
- openshift-container-platform
Timeline and source
Published on 3 March 2025 and last revised on 30 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.
References
CVE-2025-0678 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| enterprise-linux | — | — |
| grub2 | — | 2.12 |
| openshift-container-platform | — | — |
References
Similar Threats
- Medium CVE-2022-0851
- High CVE-2022-0358
- Medium CVE-2022-0480
- Medium CVE-2022-0485
- Medium CVE-2022-0852
Site Security Check
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CVE-2025-0678 is rated CVSS 7.8 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.
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