VULNERABILITY INTELLIGENCE

CVE-2021-47061

CVSS score7.8 HIGH
EPSS probability0.24%
CISA KEVNot currently listed
Published2024-02-29
Last modified2026-08-04
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-416

Primary references