NULL Pointer Dereference Affecting qemu package, versions <1:6.2+dfsg-2ubuntu5


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.1% (43rd percentile)

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  • Snyk IDSNYK-UBUNTU2204-QEMU-2779800
  • published25 Dec 2021
  • disclosed24 Aug 2022

Introduced: 25 Dec 2021

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

How to fix?

Upgrade Ubuntu:22.04 qemu to version 1:6.2+dfsg-2ubuntu5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 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 Scores

version 3.1