CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's vfio-ccw component, which processes channel programs and their associated Control Word Commands (CCWs) recursively. This could potentially lead to resource exhaustion or denial of service due to an arbitrary limit on the number of CCWs in a single channel program. Organizations using Linux systems, particularly those leveraging s390 architecture, should prioritize addressing this issue to mitigate potential disruptions in service.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Limit the number of channel program segments The processing of channel programs, and the CCWs within them, is done recursively. As such, there is an arbitrary (but not architectural) limit to the number of CCWs that can exist in a single channel program. The vfio-ccw logic breaks these channel programs into segments whenever it encounters a Transfer-In-Channel (TIC) CCW, and the combined number of segments count towards the global limit. Impose an equivalent limit to the number of segments until such logic can be made non-recursive.