NULL Pointer Dereference Affecting qemu-ipxe package, versions <1.0.0+-11.34.2


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.48% (39th percentile)

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  • Snyk IDSNYK-SLES152-QEMUIPXE-2645861
  • published14 Apr 2022
  • disclosed18 Feb 2022

Introduced: 18 Feb 2022

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

How to fix?

Upgrade SLES:15.2 qemu-ipxe to version 1.0.0+-11.34.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-ipxe package and not the qemu-ipxe package as distributed by SLES. See How to fix? for SLES:15.2 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 Base Scores

version 3.1