CVE Vulnerabilities

CVE-2020-35504

NULL Pointer Dereference

Published: May 28, 2021 | Modified: Sep 22, 2022
CVSS 3.x
6
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
3.2 LOW
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
Ubuntu
LOW

A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. 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

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Qemu Qemu * 6.0.0 (excluding)
Qemu Ubuntu bionic *
Qemu Ubuntu devel *
Qemu Ubuntu esm-infra-legacy/trusty *
Qemu Ubuntu esm-infra/xenial *
Qemu Ubuntu focal *
Qemu Ubuntu groovy *
Qemu Ubuntu hirsute *
Qemu Ubuntu impish *
Qemu Ubuntu jammy *
Qemu Ubuntu kinetic *
Qemu Ubuntu lunar *
Qemu Ubuntu mantic *
Qemu Ubuntu noble *
Qemu Ubuntu oracular *
Qemu Ubuntu trusty *
Qemu Ubuntu trusty/esm *
Qemu Ubuntu xenial *
Qemu-kvm Ubuntu precise/esm *

Potential Mitigations

References