Detections
Analytics
CVE-2021-47061
high
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU If allocating a new instance of an I/O bus fails when unregistering a device, wait to destroy the device until after all readers are guaranteed to see the new null bus. Destroying devices before the bus is nullified could lead to use-after-free since readers expect the devices on their reference of the bus to remain valid.
References
https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927
https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d
https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250
https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343