NULL Pointer Dereference Affecting qemu package, versions *


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-UBUNTU2004-QEMU-1055754
  • published6 Jan 2021
  • disclosed2 Jun 2021

Introduced: 6 Jan 2021

CVE-2020-35503  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 qemu.

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:20.04 relevant fixed versions and status.

A NULL pointer dereference flaw was found in the megasas-gen2 SCSI host bus adapter emulation of QEMU in versions before and including 6.0. This issue occurs in the megasas_command_cancelled() callback function while dropping a SCSI request. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1