CVE-2026-80551 — s390/vfio_ccw: Ensure first IDAW remains constant
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Ensure first IDAW remains constant The first IDAW in a list does not need to be on a 2K/4K b…
Published: 2026-08-26 · CVSS: 9.3 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Ensure first IDAW remains constant The first IDAW in a list does not need to be on a 2K/4K boundary like all others, and so is read separately to accurately calculate the size of the buffer needed to read the full IDAL. Verify that the address found in the first IDAW is unchanged between reads, to ensure a consistent set of IDAWs being worked with.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7