CVE-2021-3582

Gentoo Linux Security Advisory 202208-27

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR" command due to improper memory remapping (mremap). This flaw allows a malicious guest to crash the QEMU process on the host. The highest threat from this vulnerability is to system availability.

Se ha encontrado un fallo en la implementación de QEMU del dispositivo RDMA paravirtual de VMWare. El problema se produce mientras se maneja un comando "PVRDMA_CMD_CREATE_MR" debido a una reasignación de memoria inapropiada (mremap). Este fallo permite a un huésped malicioso bloquear el proceso QEMU en el host. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema

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

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-07 CVE Reserved
2021-07-21 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2025-04-12 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (4)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html	Mailing List
https://security.netapp.com/advisory/ntap-20220429-0003	Third Party Advisory

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1966266	2024-08-03

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202208-27	2022-10-05

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"				< 2.17.2 Search vendor "Qemu" for product "Qemu" and version " < 2.17.2"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected