CVE-2026-98675 Linux CVE debrief

Who should care

Linux system administrators and security teams, especially those managing systems that utilize the iio: adc: ade9000 driver, should assess exposure and prioritize patching for critical systems.

Why it matters

CVE-2026-98675 is a Linux kernel vulnerability that requires verification of kernel versions and exposure assessment for systems using the affected iio: adc: ade9000 driver. The vulnerability has been addressed with a patch, and defenders should prioritize patching for critical systems.

• Verify Linux kernel versions for systems using the iio: adc: ade9000 driver
• Assess exposure and prioritize patching for critical systems
• Monitor system logs for potential Phase C dip events

Technical summary

The Linux kernel vulnerability (CVE-2026-98675) involves an issue with the iio: adc: ade9000 driver, where Phase C dip events were not being reported due to an insufficient ADE9000_ST1_CROSSING_DEPTH value. The value was increased from 25 to 26 to ensure that the highest event bit (bit 25) is scanned, allowing Phase C dip events to be reported. This change enables the proper handling of Phase C dip events in the IRQ1 handler, addressing the vulnerability. The patch provided resolves the issue by adjusting the crossing depth to include the previously excluded event bit.

Defensive priority

Verify Linux kernel versions and assess exposure for systems using the affected iio: adc: ade9000 driver; prioritize patching for critical systems.

Recommended defensive actions

• Verify Linux kernel versions for systems using the iio: adc: ade9000 driver
• Assess exposure and prioritize patching for critical systems
• Monitor system logs for potential Phase C dip 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 and NVD entry provide details on the Linux kernel vulnerability. Three source references from the kernel.org repository are provided, detailing the specific commits addressing the issue.

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.