CVE-2020-35504

QEMU: NULL pointer dereference in scsi_req_continue() in hw/scsi/scsi-bus.c

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Severity

Low

Red Hat Product Security

3.2

CVSS 3.1

Review impact separately from score.

Published · December 21, 2020

Updated · June 28, 2026

Description

A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU. 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.

Statement

This issue does not affect Red Hat Enterprise Linux, Red Hat OpenStack Platform and RHEL Advanced Virtualization, as the qemu-kvm package does not include support for the am53c974 SCSI controller emulation.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 3.2
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

CWE-476 · NULL Pointer Dereference