CVE-2026-97600 Linux CVE debrief

Who should care

Defenders of Linux kernel deployments using ieee802154 cc2520 should assess exposure and verify patches. This includes operators, platform administrators, vulnerability management teams, and security teams who need to review and apply patches for the Linux kernel ieee802154 cc2520 driver. They should also monitor for potential use-after-free exploitation attempts and review compensating controls for exposed systems.

Why it matters

A use-after-free vulnerability was found in the Linux kernel's ieee802154 cc2520 driver. Defenders should assess exposure and verify patches.

• Verify patches for Linux kernel ieee802154 cc2520 driver
• Assess exposure in Linux kernel deployments using ieee802154 cc2520
• Monitor for potential use-after-free exploitation attempts

Technical summary

The Linux kernel's ieee802154 cc2520 driver has a use-after-free vulnerability. The FIFOP interrupt handler queues cc2520_fifop_irqwork, which can run after private data release during device removal. This issue requires verification of affected versions and exploitation. The vulnerability was introduced due to improper handling of the FIFOP interrupt handler, allowing the work to be queued again after the private data has been released. Defenders should assess exposure and verify patches for the Linux kernel ieee802154 cc2520 driver.

Defensive priority

Verify and apply patches; assess exposure in Linux kernel deployments using ieee802154 cc2520

Recommended defensive actions

• Verify and apply patches for the Linux kernel ieee802154 cc2520 driver
• Assess exposure in Linux kernel deployments using ieee802154 cc2520
• Monitor for potential use-after-free exploitation attempts
• 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. Four source references are provided from the Linux kernel Git repository. The vulnerability was found in the Linux kernel's ieee802154 cc2520 driver, which requires verification of affected versions and exploitation. Defenders should verify patches and assess exposure in Linux kernel deployments using ieee802154 cc2520.

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.