CVE-2025-39701
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-05

Last updated on: 2025-11-03

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ACPI: pfr_update: Fix the driver update version check The security-version-number check should be used rather than the runtime version check for driver updates. Otherwise, the firmware update would fail when the update binary had a lower runtime version number than the current one. [ rjw: Changelog edits ]
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-09-05
Last Modified
2025-11-03
Generated
2026-06-16
AI Q&A
2025-09-05
EPSS Evaluated
2026-06-14
NVD
CVE-2025-39701
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux 6.1.153-1
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability in the Linux kernel's ACPI pfr_update driver involves an incorrect version check during firmware updates. The driver was using the runtime version number to verify updates instead of the security version number. This caused firmware updates to fail if the update binary had a lower runtime version number than the current firmware, even if the update was valid.

Impact Analysis

This vulnerability can cause legitimate firmware updates to fail, potentially preventing important security or functionality updates from being applied. This could leave systems running outdated firmware, which might expose them to other security risks or operational issues.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2025-39701. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart