Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.9, < 5.10.37 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343Patch
- https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250Patch
- https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2dPatch
- https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927Patch
- https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343Patch
- https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250Patch
- https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2dPatch
- https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927Patch
FAQ
What is CVE-2021-47061?
CVE-2021-47061 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 unr...
How severe is CVE-2021-47061?
CVE-2021-47061 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47061?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.