CVE-2020-35503

MEDIUM

QEMU < 6.0.0 - Denial of Service via megasas-gen2 SCSI Host Bus Adapter Emulation

Title source: llm
STIX 2.1

Description

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.

References (2)

Core 2
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1910346
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210720-0008/

Scores

CVSS v3 6.0
EPSS 0.0002
EPSS Percentile 7.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (2)
fedoraproject/fedora 33
qemu/qemu < 6.0.0
Published Jun 02, 2021
Tracked Since Feb 18, 2026