NULL Pointer Dereference Affecting virt:av/qemu-kvm-hw-usbredir package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.38% (32nd percentile)

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  • Snyk IDSNYK-RHEL8-VIRT-4416089
  • published24 Dec 2021
  • disclosed12 Dec 2021

Introduced: 12 Dec 2021

CVE-2021-4158  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 virt:av/qemu-kvm-hw-usbredir.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt:av/qemu-kvm-hw-usbredir package and not the virt:av/qemu-kvm-hw-usbredir package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

CVSS Base Scores

version 3.1