NULL Pointer Dereference Affecting qemu-sgabios package, versions <8-70.59.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.28% (19th percentile)

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  • Snyk IDSNYK-SLES150-QEMUSGABIOS-2657960
  • published14 Apr 2022
  • disclosed4 Nov 2021

Introduced: 4 Nov 2021

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

How to fix?

Upgrade SLES:15.0 qemu-sgabios to version 8-70.59.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-sgabios package and not the qemu-sgabios package as distributed by SLES. See How to fix? for SLES:15.0 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 Base Scores

version 3.1