NULL Pointer Dereference Affecting qemu-img package, versions <15:6.2.0-11.module+el8.6.0+14707+5aa4b42d


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.06% (24th percentile)

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  • Snyk ID SNYK-CENTOS8-QEMUIMG-1957591
  • published 26 Jul 2021
  • disclosed 23 Jan 2021

How to fix?

Upgrade Centos:8 qemu-img to version 15:6.2.0-11.module+el8.6.0+14707+5aa4b42d or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-img package and not the qemu-img package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. 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
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NVD

6.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

3.2 low
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SUSE

3.2 low