CVE-2021-47061

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

29/02/2024

Last modified:

10/12/2024

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: Destroy I/O bus devices on unregister failure _after_ sync&#39;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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.9 (including)	5.10.37 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.11.21 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.12 (including)	5.12.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-47061

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools