CVE Vulnerability

CVE-2021-3735

A deadlock issue was found in the AHCI controller device of QEMU. It occurs on a software reset (ahci_reset_port) while handling a host-to-device Register FIS (Frame Information Structure) packet from the guest. A privileged user inside the guest could use this flaw to hang the QEMU process on the host, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

4.4 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://access.redhat.com/security/cve/CVE-2021-3735 Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-3735 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1997184 Issue Tracking Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:qemu:qemu:6.1.0:rc4:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Information

Published : 2022-08-26 04:15

Updated : 2022-09-01 04:03

NVD link : CVE-2021-3735

Mitre link : CVE-2021-3735

Products Affected
No products.
CWE
CWE-400

CWE-667