CVE-2026-74412 Linux CVE debrief

Who should care

Linux kernel maintainers, Linux distribution vendors, and users of Linux systems with rtw88 wifi drivers should assess exposure and apply patches if necessary. Additionally, security teams and vulnerability management teams should review this vulnerability and prioritize patching affected systems to prevent potential exploitation and impact on network availability and security.

Why it matters

A vulnerability in the Linux kernel's rtw88 wifi driver has been addressed, and defenders should prioritize patching affected systems to prevent potential exploitation and impact on network availability and security.

• Network availability could be impacted due to improper handling of device detachment and attachment.
• Security of network communications could be compromised if an attacker exploits this vulnerability.
• Verification of Linux kernel versions and application of patches are necessary to mitigate this vulnerability.
• Defenders should prioritize patching affected systems to prevent potential exploitation.

Technical summary

The Linux kernel's rtw88 wifi driver had a vulnerability where it incorrectly retrieved a pointer using pci_get_drvdata, leading to improper handling of device detachment and attachment. This was resolved by using ieee80211_stop_queues/wake_queues consistently with other queue stop/start paths in the driver. The vulnerability could impact network availability and security if exploited. The issue was identified and addressed through standard CVE Program and NVD processes. Affected systems should be patched to prevent potential exploitation.

Defensive priority

Medium

Recommended defensive actions

• Review and apply the patches provided by the Linux kernel maintainers to ensure the rtw88 driver is updated.
• Verify that the Linux kernel version in use is not affected by checking the version against the known affected versions.
• Monitor network devices and systems for any unusual activity that could be related to this vulnerability.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• 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.

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description and affected versions. However, specific information on exploitation or victim impact is not available. The Linux kernel maintainers have provided patches to address this vulnerability. Users of Linux systems with rtw88 wifi drivers should assess exposure and apply patches if necessary. The CVE Program and NVD have documented this vulnerability, and defenders should review these sources for additional information.

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.