CVE-2021-3735

CVSS V2 None CVSS V3 Medium 4.4

Description

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.

Overview

CVE ID
CVE-2021-3735

Assigner
secalert@redhat.com

Vulnerability Status
Analyzed

Published Version
2022-08-26T16:15:09

Last Modified Date
2022-09-01T16:03:59

Weakness Enumerations

CWE	URL
CWE-400	http://cwe.mitre.org/data/definitions/400.html

CPE Configuration (Product)

CPE	Vulnerable	Operator
cpe:2.3:a:qemu:qemu:6.1.0:rc4::::::	1	OR
cpe:2.3:o:debian:debian_linux:10.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:11.0:::::::*	1	OR

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
HIGH

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
4.4

Base Severity
MEDIUM

Exploitability Score
0.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://access.redhat.com/security/cve/CVE-2021-3735
https://security-tracker.debian.org/tracker/CVE-2021-3735
https://bugzilla.redhat.com/show_bug.cgi?id=1997184

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-3735
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3735

History

Created	Old Value	New Value	Data Type	Notes
2022-08-26 17:00:09				Added to TrackCVE