PT-2025-20442 · Grub+2 · Grub+2

Published 2025-05-06 · Updated 2025-10-17 · CVE-2025-4382

Positive Technologies (AI Summary)

CVSS v2.0

6.2

Medium

Base vector

AV:L/AC:L/Au:S/C:C/I:C/A:N

Name of the Vulnerable Software and Affected Versions GRUB versions (affected versions not specified)

Description A flaw in systems using LUKS-encrypted disks with GRUB configured for TPM-based auto-decryption may allow an attacker with physical access to access unencrypted data without further authentication. This occurs when GRUB fails to locate a valid filesystem and enters rescue mode after the underlying filesystem superblock is corrupted, leaving the decryption key loaded in system memory. This scenario compromises data confidentiality and also presents a data integrity concern.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

BDU:2025-10602

CVE-2025-4382

OPENSUSE-SU-2025:15085-1

OPENSUSE-SU-2025_01615-1

SUSE-SU-2025:01615-1

SUSE-SU-2025:01747-1

SUSE-SU-2025:20511-1

SUSE-SU-2025:20863-1

SUSE-SU-2025_01615-1

SUSE-SU-2025_01747-1

Affected Products

Debian

Grub

Suse

References · 98

• https://nvd.nist.gov/vuln/detail/CVE-2025-4382 · Security Note
• https://bdu.fstec.ru/vul/2025-10602 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-4382 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-4382 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-4382 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-4382 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:20511-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01747-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-4382 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01615-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-4382 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:20863-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15085-1 · Vendor Advisory
• https://bugzilla.suse.com/1237012 · Note
• https://bugzilla.suse.com/1235971 · Note