Grub2: out-of-bounds write_CVE-2025-61661

4.8 / 10

MEDIUM

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

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.

Basic Information

ID CVE-2025-61661

Source redhat

Published Nov 18, 2025 at 18:20

Modified Nov 18, 2025 at 22:03

Affected Product

Vendor Red Hat

Product Red Hat Enterprise Linux 10

CWE Classification

CWE-131

References

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    "published": "2025-11-18T18:20:42.151Z",
    "modified": "2025-11-18T22:03:42.773Z",
    "type": "cve",
    "title": "Grub2: out-of-bounds write",
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