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NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package qemu  (opens in a new tab)

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EPSS
0.48% (39th percentile)

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  • Snyk IDSNYK-UBUNTU1404-QEMU-1064800
  • published26 Jan 2021
  • disclosed26 May 2021
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Introduced: 26 Jan 2021

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

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:14.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu.

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.