CVE-2025-71106
Description
A logic error was found in the Linux kernel's power management filesystem freeze callback. The freeze_all_ptr check in filesystems_freeze_callback() has reversed logic, causing all filesystems to be frozen when filesystem_freeze_enabled is false (the opposite of intended behavior). This triggers WARN_ON_ONCE() in __set_task_frozen() when attempting to freeze filesystems that are not prepared for freezing.
Statement
This bug affects system suspend/hibernate operations. The reversed logic causes unexpected filesystem freezing behavior during power state transitions, resulting in kernel warnings. The issue was introduced in a commit intended to always freeze efivarfs during power management operations. Systems may experience warnings during suspend/resume cycles.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 3.3 | 5.5 | N/A |
| Attack Vector | Local | Local | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | Low | Low | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | Low | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Other
Technical Impact: Alter Execution Logic
This weakness can cause unintended logic to be executed and other unexpected application behavior.
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