Improper Error Handling in Linux RSI WiFi Driver Causes Kernel Warning

Publication date: 2026-03-25

Last updated on: 2026-04-24

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: Don't default to -EOPNOTSUPP in rsi_mac80211_config This triggers a WARN_ON in ieee80211_hw_conf_init and isn't the expected behavior from the driver - other drivers default to 0 too.

CVSS Scores

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Meta Information

Published

2026-03-25

Last Modified

2026-04-24

Generated

2026-07-06

AI Q&A

2026-03-25

EPSS Evaluated

2026-07-05

NVD

CVE-2026-23373

EUVD

EUVD-2026-15362

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	6.9
linux	linux_kernel	From 6.19 (inc) to 6.19.7 (exc)
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	From 6.13 (inc) to 6.18.17 (exc)
linux	linux_kernel	From 6.9.1 (inc) to 6.12.77 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel's wifi driver, specifically in the rsi driver. The issue is that the driver defaults to returning the error code -EOPNOTSUPP in the function rsi_mac80211_config, which triggers a warning (WARN_ON) in the ieee80211_hw_conf_init function. This behavior is unexpected because other wifi drivers default to returning 0 in this situation.

Impact Analysis

The vulnerability causes an unexpected warning in the Linux kernel's wifi driver during hardware configuration initialization. While the exact impact is not detailed, such warnings can lead to instability or improper handling of wifi hardware configuration, potentially affecting wireless connectivity or system reliability.

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