CVE-2026-97432 Linux CVE debrief

Who should care

Defenders responsible for Linux kernel and iwlwifi driver updates, as well as system administrators managing Linux-based systems with iwlwifi drivers, should assess exposure and prioritize verification to prevent potential firmware crashes.

Why it matters

A vulnerability in the Linux kernel's iwlwifi driver could cause firmware crashes and system instability. Defenders should assess exposure, prioritize verification of Linux kernel versions and iwlwifi driver updates, and review binding handling and PHY context management.

• Potential firmware crashes and system instability
• Verification of Linux kernel versions and iwlwifi driver updates required
• Binding handling and PHY context management may need to be reviewed

Technical summary

The Linux kernel's iwlwifi driver has a vulnerability that could cause a firmware crash when a P2P-Device is removed from a binding. The issue arises from the P2P-Device being removed and re-added to the binding by unrelated code, leaving a PHY context pointer that is not properly handled. This can happen when a station interface is connected on a channel, the P2P-Device performs a remain-on-channel (ROC) on that channel, and then the ROC ends. The vulnerability can be addressed by adding a boolean that indicates whether or not the P2P-Device should be added to the binding, and handling that in the binding iterator.

Defensive priority

Defenders should assess exposure and prioritize verification of Linux kernel versions and iwlwifi driver updates to prevent potential firmware crashes.

Recommended defensive actions

• Assess exposure by verifying Linux kernel versions and iwlwifi driver updates
• Prioritize verification of binding handling and PHY context management
• Monitor for potential firmware crashes and system instability
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but evidence is limited. The Linux kernel's official repository and commit history may provide additional information. To verify, defenders should review the Linux kernel's official repository and commit history for changes related to iwlwifi driver updates and P2P-Device binding handling. They should also assess exposure by verifying Linux kernel versions and iwlwifi driver updates.

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.