CVE Vulnerabilities

CVE-2020-35505

NULL Pointer Dereference

Published: May 28, 2021 | Modified: Sep 22, 2022
CVSS 3.x
4.4
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/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
Ubuntu

A NULL pointer dereference flaw was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0. This issue occurs while handling the Information Transfer command. 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 Qemu 6.0.0-rc1 (including) 6.0.0-rc1 (including)
Qemu Qemu 6.0.0-rc2 (including) 6.0.0-rc2 (including)

Potential Mitigations

References