CVE-2025-38283

In the Linux kernel, the following vulnerability has been resolved:

hisi_acc_vfio_pci: bugfix live migration function without VF device driver

If the VF device driver is not loaded in the Guest OS and we attempt to perform device data migration, the address of the migrated data will be NULL. The live migration recovery operation on the destination side will access a null address value, which will cause access errors.

Therefore, live migration of VMs without added VF device drivers does not require device data migration. In addition, when the queue address data obtained by the destination is empty, device queue recovery processing will not be performed.

This vulnerability carries no operational risk for Red Hat Enterprise Linux environments, as the vulnerable HiSilicon accelerator live migration driver code is not present in supported Red Hat kernels. The upstream flaw involves a null pointer dereference during virtual machine migration when a guest operating system lacks the corresponding virtual function driver for specialized hardware. Because this driver is not built or shipped in Red Hat enterprise distributions, supported systems are not impacted.