CVEvulnerability
CVE-2025-61661
4.8 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2025-11-18
- Last modified
- 2026-10-18
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.8 MEDIUM — CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
- Weaknesses
- CWE-131
Description
A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although given the complexity of the exploit the impact is most likely limited.
Related
Weakness · CWE (1)
- CWE-131 Incorrect Calculation of Buffer Size weakness
References
- https://access.redhat.com/security/cve/CVE-2025-61661 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2413827 bugzilla.redhat.com
- http://www.openwall.com/lists/oss-security/2025/11/18/8 www.openwall.com