VULNERABILITY INTELLIGENCE

CVE-2020-35503

CVSS score6 MEDIUM
EPSS probability0.27%
CISA KEVNot currently listed
Published2021-06-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-476

Primary references