CVE-2026-80548 evidence review
Linux
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Selectively expand io_mutex The io_mutex was defined to serialize the io_regions, but then has also sort of been associated with the I/O themselves because of the close relationship they share. With the handful of races that are possible, the choices are either to: A) expand the scope of io_mutex to close these remaining windows, or B) reduce the scope of io_mutex to just io_region, and introduce a new lock mechanism for the remaining I/O resources This patch implements A, since B brings with it a lot more in...
This record remains available for product and version identification, but it is not presented as a complete remediation procedure. Confirm the affected range and the supported fix in a direct vendor advisory before changing production systems.
Identify the product and installed version
Record whether Linux is present, where it is installed, and which interfaces are exposed.
- Record the product name, package or appliance identifier, and installed version.
- Identify internet-facing, administrative, API, and internal access paths.
- Preserve the pre-change configuration and relevant service logs.
Compare the affected range
Use the current record as an identification aid: >= 4f76617378ee97c557b526cb58d3c61eb0a9c963 < dab6a6627b0b0cce23653e99c7b0bf8c6cfd82e0, >= 4f76617378ee97c557b526cb58d3c61eb0a9c963 < 56d7488533ceac4e986e96e15c9e487a2245bc01, >= 4f76617378ee97c557b526cb58d3c61eb0a9c963 < f72a51810d49411bd8cad0c2df8592320a2fe5cc, >= 4f76617378ee97c557b526cb58d3c61eb0a9c963 < 2ba9efdf9ebedc4e54df4b56aa3b43a65f7967cd, >= 4f76617378ee97c557b526cb58d3c61eb0a9c963 < b6aecea4b2b246f9fbd98a5712daa1193a60818e, >= 4f76617378ee97c557b526cb58d3c61eb0a9c963 < 2a5ac0c0f1f7da33929211a2e41911bf72ee35d8, >= 4f76617378ee97c557b526cb58d3c61eb0a9c963 < 34f4feff3e90bd09308fad0974e97113b23b812a, >= 5.2. Resolve incomplete inventory results before deciding that an asset is unaffected.
Verify the authoritative remediation source
Open the linked source material and locate a direct vendor advisory for this CVE. Confirm the supported fixed release and product-specific update path before making a production change.
Operational boundary
This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.