CVE-2021-3947

Gentoo Linux Security Advisory 202208-27

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information.

Se ha encontrado un desbordamiento de pila en QEMU en el componente NVME. El fallo es encontrado en nvme_changed_nslist(), donde un huésped malicioso que controle determinadas entradas puede leer memoria fuera de límites. Un usuario malicioso podría usar este fallo conllevando a una divulgación de información confidencial

Multiple vulnerabilities have been discovered in QEMU, the worst of which could result in remote code execution (guest sandbox escape). Versions less than 7.0.0 are affected.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-11 CVE Reserved
2022-02-18 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (3)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20220318-0003	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=2021869	2023-11-21

URL	Date	SRC
https://security.gentoo.org/glsa/202208-27	2023-11-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				>= 6.0.0 <= 6.1.0 Search vendor "Qemu" for product "Qemu" and version " >= 6.0.0 <= 6.1.0"		-		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				6.2.0 Search vendor "Qemu" for product "Qemu" and version "6.2.0"		rc0		Affected
Qemu Search vendor "Qemu"		Qemu Search vendor "Qemu" for product "Qemu"				6.2.0 Search vendor "Qemu" for product "Qemu" and version "6.2.0"		rc1		Affected