CVE-2025-71111

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Source
https://cve.org/CVERecord?id=CVE-2025-71111
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-71111.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-71111
Downstream
Related
Published
2026-01-14T15:05:58.649Z
Modified
2026-03-20T12:46:37.097333Z
Summary
hwmon: (w83791d) Convert macros to functions to avoid TOCTOU
Details

In the Linux kernel, the following vulnerability has been resolved:

hwmon: (w83791d) Convert macros to functions to avoid TOCTOU

The macro FANFROMREG evaluates its arguments multiple times. When used in lockless contexts involving shared driver data, this leads to Time-of-Check to Time-of-Use (TOCTOU) race conditions, potentially causing divide-by-zero errors.

Convert the macro to a static function. This guarantees that arguments are evaluated only once (pass-by-value), preventing the race conditions.

Additionally, in storefandiv, move the calculation of the minimum limit inside the update lock. This ensures that the read-modify-write sequence operates on consistent data.

Adhere to the principle of minimal changes by only converting macros that evaluate arguments multiple times and are used in lockless contexts.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71111.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9873964d6eb24bd0205394f9b791de9eddbcb855
Fixed
3dceb68f6ad33156032ef4da21a93d84059cca6d
Fixed
bf5b03227f2e6d4360004886d268f9df8993ef8f
Fixed
f2b579a0c37c0df19603d719894a942a295f634a
Fixed
f94800fbc26ccf7c81eb791707b038a57aa39a18
Fixed
a9fb6e8835a22f5796c1182ed612daed3fd273af
Fixed
c8cf0c2bdcccc6634b6915ff793b844e12436680
Fixed
670d7ef945d3a84683594429aea6ab2cdfa5ceb4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-71111.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.18
Fixed
5.10.248
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.198
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.160
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.120
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.64
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-71111.json"