In the Linux kernel, the following vulnerability has been resolved:virtio_pmem: Check device status before requesting flushIf a pmem device is in a bad status, the driver side could wait forhost ack forever in virtio_pmem_flush(), causing the system to hang.So add a status check in the beginning of virtio_pmem_flush() to returnearly if the device is not activated.
No PoCs from references.
- https://github.com/w4zu/Debian_security