CVE-2021-3392

CVE Details

Release Date:	2021-03-23
Impact:	None	What is this?

Description

A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request object 'req' from a pending requests queue. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. Versions between 2.10.0 and 5.2.0 are potentially affected.

See more information about CVE-2021-3392 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	3.2
Vector String:	CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	High
User Interaction:	None
Scope:	Changed
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Low

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (qemu)	ELSA-2021-9425	2021-08-17
Oracle Linux version 8 (hivex)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (libguestfs)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (libguestfs-winsupport)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (libiscsi)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (libnbd)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (libvirt)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (libvirt-dbus)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (libvirt-python)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (nbdkit)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (netcf)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (perl-Sys-Virt)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (qemu-kvm)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (seabios)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (sgabios)	ELSA-2021-9568	2021-12-01
Oracle Linux version 8 (supermin)	ELSA-2021-9568	2021-12-01