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.

CVSS v3.0 4.4 MEDIUM

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 (hide)

cpe:2.3:a:qemu:qemu:6.1.0:rc4:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:10.0:::::::*
	cpe:2.3:o:debian:debian_linux:11.0:::::::*

Information

Published : 2022-08-26 09:15

Updated : 2022-09-01 09:03

NVD link : CVE-2021-3735

Mitre link : CVE-2021-3735

JSON object : View

CWE

CWE-667

Improper Locking

CWE-400

Uncontrolled Resource Consumption

Products Affected

debian

debian_linux

qemu

qemu

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4.4 /10