CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's KVM subsystem, specifically related to the handling of GISC references during the registration process for guest ISC. If an error occurs during setup, the failure to unregister the GISC reference leads to a reference count leak, which could potentially exhaust system resources over time. Organizations utilizing Linux systems with KVM for virtualization should prioritize addressing this issue to prevent resource depletion and maintain system stability.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure kvm_s390_gisc_register() registers the guest ISC before pinning the guest interrupt forwarding pages and allocating the AISB bit. If any of the later setup steps fails, the function unwinds the pinned pages and other local state, but does not unregister the GISC reference. Add the missing kvm_s390_gisc_unregister() to the error unwind path.