CVE-2026-80551

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> s390/vfio_ccw: Ensure first IDAW remains constant<br /> <br /> The first IDAW in a list does not need to be on a 2K/4K boundary<br /> like all others, and so is read separately to accurately calculate<br /> the size of the buffer needed to read the full IDAL.<br /> <br /> Verify that the address found in the first IDAW is unchanged between<br /> reads, to ensure a consistent set of IDAWs being worked with.