BaseFortify

Publication date: 2025-10-09

Last updated on: 2026-02-26

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: increase scan_ies_len for S1G Currently the S1G capability element is not taken into account for the scan_ies_len, which leads to a buffer length validation failure in ieee80211_prep_hw_scan() and subsequent WARN in __ieee80211_start_scan(). This prevents hw scanning from functioning. To fix ensure we accommodate for the S1G capability length.

CVSS Scores

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Meta Information

Published

2025-10-09

Last Modified

2026-02-26

Generated

2026-07-06

AI Q&A

2025-10-09

EPSS Evaluated

2026-07-05

NVD

CVE-2025-39957

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	6.17
linux	linux_kernel	From 5.15.160 (inc) to 5.16 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel's wifi mac80211 component involves an incorrect calculation of the scan_ies_len value because the S1G capability element length was not included. This causes a buffer length validation failure in the ieee80211_prep_hw_scan() function, leading to a warning in __ieee80211_start_scan() and preventing hardware scanning from functioning properly. The fix involves increasing scan_ies_len to account for the S1G capability length.

Impact Analysis

The vulnerability prevents hardware scanning from functioning correctly in the affected Linux kernel wifi component. This could impact the ability of the system to perform wifi scans, potentially affecting network connectivity or wireless functionality.

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