CVE-2026-97411 Linux CVE debrief

Who should care

Defenders responsible for Linux kernel maintenance, system administrators, and security teams should assess exposure and prioritize verification of Linux kernel versions, especially those with the IBM EMAC (Ethernet MAC) driver, to prevent potential system hangs during module removal. They should review and update module removal procedures to prevent system hangs and verify Linux kernel versions and configurations.

Why it matters

Defenders should assess exposure and prioritize verification of Linux kernel versions, especially those with the IBM EMAC (Ethernet MAC) driver, to prevent potential system hangs during module removal.

• Potential system hang during module removal
• Verification of Linux kernel versions and configurations is required
• Review and update module removal procedures to prevent system hangs

Technical summary

The vulnerability is caused by the unconditional call to napi_disable() in the mal_remove() function, which can lead to an indefinite kernel spin if NAPI was never enabled or already disabled. This issue affects Linux kernel versions that use the IBM EMAC (Ethernet MAC) driver. Defenders should assess exposure and prioritize verification of Linux kernel versions to prevent potential system hangs during module removal. The vulnerability has been resolved, but verification of kernel versions and configurations is required.

Defensive priority

Defenders should assess exposure and prioritize verification of Linux kernel versions, especially those with the IBM EMAC (Ethernet MAC) driver, to prevent potential system hangs during module removal.

Recommended defensive actions

• Assess exposure by verifying Linux kernel versions and configurations
• Prioritize verification of IBM EMAC driver usage
• Review and update module removal procedures to prevent system hangs
• 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 NVD entry provide details on the vulnerability, which is related to the Linux kernel's handling of NAPI (Network Acceleration and Interrupt Handling) in the EMAC driver. The vulnerability has been resolved, but defenders should verify Linux kernel versions and configurations to assess exposure. The IBM EMAC driver is used in various Linux kernel versions, and its usage should be reviewed to prevent potential system hangs during module removal. The NVD entry provides additional information on the vulnerability, and 3

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.