CVE-2026-64175 Linux CVE debrief

Who should care

Linux kernel users, particularly those with Intel BE201/Wi-Fi 7 devices, should be aware of this vulnerability and ensure they apply the necessary patches to prevent potential issues. This includes users of affected Linux kernel versions, administrators of systems with Intel BE201/Wi-Fi 7 devices, and security teams responsible for vulnerability management.

Technical summary

The Linux kernel vulnerability CVE-2026-64175 was caused by a lack of checking for the mld->fw_status.in_hw_restart flag in iwl_mld_tx_from_txq(). This led to a loop where frames were dequeued from mac80211 and pushed to the transport layer, only to be immediately freed due to the firmware being dead. The fix adds a guard to stop TX during firmware restart, similar to existing guards in the RX path and TXQ allocation worker. This change prevents rapid skb allocation churn and reduces the risk of memory pressure. The vulnerability affects Linux kernel users, particularly those with Intel BE201/Wi-Fi 7 devices.

Defensive priority

Medium

Recommended defensive actions

• Apply the official patch to update the Linux kernel
• Ensure Linux kernel is up-to-date
• Monitor system logs for firmware crash events
• 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 was published on 2026-07-19T16:17:59.750Z and has not been modified since then. The NVD entry is currently Received. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the official CVE record. The vulnerability affects Linux kernel users, particularly those with Intel BE201/Wi-Fi 7 devices. The official CVE record and NVD detail provide additional context.

Official resources