High severity · published Sep 5, 2025
CVE-2025-39701
ACPI: pfr_update: Fix the driver update version check
7.8
CVSS
0.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.17 before 6.1.149; 6.2 before 6.6.103; 6.7 before 6.12.44; 6.13 before 6.16.4; 6.17; 6.17 · source: NVD
LI
Linux · Linux
0db89fa243e5edc5de38c88b369e4c3755c5fb74 before 79300ff532bccbbf654992c7c0863b49a6c3973c; 0db89fa243e5edc5de38c88b369e4c3755c5fb74 before cf0a88124e357bffda487cbf3cb612bb97eb97e4; 0db89fa243e5edc5de38c88b369e4c3755c5fb74 before b00219888c11519ef75d988fa8a780da68ff568e; 0db89fa243e5edc5de38c88b369e4c3755c5fb74 before 908094681f645d3a78e18ef90561a97029e2df7b; 0db89fa243e5edc5de38c88b369e4c3755c5fb74 before 8151320c747efb22d30b035af989fed0d502176e; 5.17 · source: vendor
DL
Debian Linux · Debian
11.0 · source: NVD
SC
SIMATIC CN 4100 · Siemens
before V5.0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-39701
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-39701
Patch
https://git.kernel.org/stable/c/79300ff532bccbbf654992c7c0863b49a6c3973c
Patch
https://git.kernel.org/stable/c/8151320c747efb22d30b035af989fed0d502176e
Patch
https://git.kernel.org/stable/c/908094681f645d3a78e18ef90561a97029e2df7b
Patch
https://git.kernel.org/stable/c/b00219888c11519ef75d988fa8a780da68ff568e
Patch
https://git.kernel.org/stable/c/cf0a88124e357bffda487cbf3cb612bb97eb97e4
Mailing List
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
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