CVE-2021-3392 Information

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.

CVSS Vector

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

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1924042 https://bugs.launchpad.net/qemu/+bug/1914236 https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html https://security.netapp.com/advisory/ntap-20210507-0001/

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

3.2