Grub2: use-after-free in net_set_vlan_CVE-2025-54770

4.9 / 10

MEDIUM

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

Description

A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the net_set_vlan command is not properly unregistered when the network module is unloaded from memory. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability

Basic Information

ID CVE-2025-54770

Source redhat

Published Nov 18, 2025 at 18:30

Modified Nov 18, 2025 at 22:03

Affected Product

Vendor Red Hat

Product Red Hat Enterprise Linux 10

CWE Classification

CWE-825

References

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    "published": "2025-11-18T18:30:10.347Z",
    "modified": "2025-11-18T22:03:40.774Z",
    "type": "cve",
    "title": "Grub2: use-after-free in net_set_vlan",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2025-54770\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2413813",
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