CVE-2026-74411 Linux CVE debrief

Who should care

Linux system administrators and users who rely on Wi-Fi scanning functionality should apply kernel updates to prevent potential system panics during Wi-Fi scanning on the 6GHz band. They should review system configurations for potential exposure and monitor system logs for signs of exploitation.

Why it matters

Linux system administrators and users should apply kernel updates to prevent potential system panics during Wi-Fi scanning on the 6GHz band.

• Potential system panics during Wi-Fi scanning
• Denial of service due to infinite loop
• Need for kernel updates to prevent exploitation

Technical summary

The Linux kernel vulnerability caused a system panic during Wi-Fi scanning on the 6GHz band due to an infinite loop. The vulnerability was resolved by correcting the data type for the scan index. The issue was observed during Wi-Fi scanning on the 6GHz band, and the system panic occurred due to an infinite loop. The CPU becomes stuck in rtw89_hw_scan_add_chan_ax for over 20 seconds, leading to a system panic. The vulnerability was resolved by correcting the data type for the scan index, preventing the infinite loop.

Defensive priority

Apply kernel updates to prevent potential system panics

Recommended defensive actions

• Apply kernel updates to address the vulnerability
• Review system configurations for potential exposure
• Monitor system logs for signs of exploitation
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Evidence notes

The CVE record and source item provide details on a Linux kernel vulnerability that caused a system panic during Wi-Fi scanning. The vulnerability was observed during Wi-Fi scanning on the 6GHz band, and the system panic occurred due to an infinite loop. The CVE record was published on 2026-08-15T05:59:18.696Z and has not been modified since then. The source item provides additional information on the vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.