Hongyu

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A vulnerability in the Linux kernel has been identified, where virtio-console continues to write to the MMIO even after the underlying virtio-pci device is reset. This issue can cause a hang on kexec in a VM and result in invalid memory accesses. The problem is also related to IOMMUs being reset before devices, which can lead to devices continuing to access guest memory and getting errors from the IOMMU. The issue was traced down to virtio-console and can be solved by breaking all virtio devices on virtio bus shutdown, then resetting them. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.