CVE-2026-72067
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
In the Linux kernel, the CPU hotplug mechanism has a bug in cpuhp_invoke_callback() that hides the original error during rollback of earlier callbacks. The ret variable is reused to store the rollback result, which can mask the original error.
Risk Assessment
The bug can lead to incorrect reporting of hotplug operation success, potentially hiding real issues and complicating system failure diagnosis.
Recommendation
Apply the Linux kernel patch that separates the rollback result from the original error to preserve information about the initial failure.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: cpu: hotplug: Preserve per instance callback errors cpuhp_invoke_callback() unwinds earlier callbacks for the same hotplug state when one instance fails. The rollback path currently reuses ret, so a successful rollback can hide the original error and make the failed transition look successful. Keep the rollback result separate from the original error.