CyberRota Analysis
AI-GeneratedA vulnerability in the Linux kernel affects the KVM subsystem for s390 architecture, specifically related to the handling of adapter interrupt forwarding for zPCI devices. If an attempt is made to enable interrupt forwarding while it is already active, the system will reject the request, preventing resource leakage and potential overwriting issues. Organizations using Linux on s390 systems should prioritize this fix to mitigate risks associated with improper interrupt handling and resource management.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first unregistering. So reject any request to enable interrupt forwarding if its already enabled for the zPCI device. This also fixes overwriting and thus leaking resources when the ioctl is called multiple times for the same device.