CVE-2021-3392

low

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.

References

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/

Details

Source: MITRE

Published: 2021-03-23

Updated: 2022-04-26

Type: CWE-416

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 3.2

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

Impact Score: 1.4

Exploitability Score: 1.5

Severity: LOW