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 4.4 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

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://bugzilla.redhat.com/show_bug.cgi?id=1997184	Issue Tracking Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-3735	Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-3735	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1997184	Issue Tracking Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-3735	Third Party Advisory
https://security.netapp.com/advisory/ntap-20250228-0009/

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:::::::*

History

28 Feb 2025, 13:15

Type	Values Removed	Values Added
References		() https://security.netapp.com/advisory/ntap-20250228-0009/ -

Information

Published : 2022-08-26 16:15

Updated : 2025-02-28 13:15

NVD link : CVE-2021-3735

Mitre link : CVE-2021-3735

CVE.ORG link : CVE-2021-3735

JSON object : View

Products Affected

qemu

qemu

debian

debian_linux

CWE

CWE-667

Improper Locking

CWE-400

Uncontrolled Resource Consumption

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