NULL Pointer Dereference Affecting libguestfs-appliance package, versions <1:1.44.0-5.0.1.module+el8.6.0+20659+3dcf7c70


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.06% (26th percentile)

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  • Snyk IDSNYK-ORACLE8-LIBGUESTFSAPPLIANCE-2828904
  • published10 Apr 2022
  • disclosed26 May 2021

Introduced: 26 May 2021

CVE-2021-20196  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Oracle:8 libguestfs-appliance to version 1:1.44.0-5.0.1.module+el8.6.0+20659+3dcf7c70 or higher.
This issue was patched in ELSA-2022-1759.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libguestfs-appliance package and not the libguestfs-appliance package as distributed by Oracle. See How to fix? for Oracle: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