PT-2025-47376 · Grub2+3 · Grub2+3

CVE-2025-54770

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Published

2025-11-18

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Updated

2026-09-01

CVSS v3.1

4.9

Medium

VectorAV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Name of the Vulnerable Software and Affected Versions GRUB2 (affected versions not specified)
Description A flaw exists in the GRUB2 bootloader’s network module that can lead to a Denial of Service (DoS). This is a Use-after-Free issue stemming from improper unregistration of the net set vlan command when the network module is unloaded from memory. An attacker executing this command can trigger access to invalid memory locations, causing system instability and a potential crash.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

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Weakness Enumeration

Related Identifiers

BDU:2025-14789
CVE-2025-54770
OESA-2025-2735
OESA-2025-2736
OESA-2025-2737
OPENSUSE-SU-2025:15749-1
OPENSUSE-SU-2025:20163-1
SUSE-SU-2025:21062-1
SUSE-SU-2025:21212-1
SUSE-SU-2025:21223-1
SUSE-SU-2025:4196-1
SUSE-SU-2025:4305-1
SUSE-SU-2025_4196-1
SUSE-SU-2025_4305-1
SUSE-SU-2026:21621-1

Affected Products

Debian
Grub2
Red Os
Suse