CVE-2021-47061

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343	Patch
https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250	Patch
https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d	Patch
https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927	Patch
https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343	Patch
https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250	Patch
https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d	Patch
https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-02-29 23:15

Updated : 2024-12-10 16:55

NVD link : CVE-2021-47061

Mitre link : CVE-2021-47061

CVE.ORG link : CVE-2021-47061

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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