PT-2021-8007 · Linux+1 · Linux Kernel+1
Sean Christopherson
·
Published
2021-04-20
·
Updated
2024-12-10
·
CVE-2021-47061
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to the use of memory after it has been freed during the registration of input/output devices in the Kernel-based Virtual Machine (KVM) subsystem of the Linux kernel. This could lead to a denial of service. The problem arises when allocating a new instance of an I/O bus fails during device unregistration. To fix this, devices should be destroyed after all readers have seen the new null bus, preventing use-after-free errors.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Linux Kernel
Suse