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CVE-2021-3735

Quick assessment

Affected
n/a QEMU
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU存在安全漏洞，该漏洞源于其AHCI控制器在软件重置（ahci_reset_port）时，同时处理来自客户的主机到设备注册FIS（帧信息结构）报文时发生死锁问题使客户机中的特权用户可以挂起主机上的QEMU进程，从而导致拒绝服务。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.20% · P10

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-3735

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
加锁机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
QEMU 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU存在安全漏洞，该漏洞源于其AHCI控制器在软件重置（ahci_reset_port）时，同时处理来自客户的主机到设备注册FIS（帧信息结构）报文时发生死锁问题使客户机中的特权用户可以挂起主机上的QEMU进程，从而导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- QEMU Not Known -

II. Public POCs for CVE-2021-3735

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III. Intelligence Information for CVE-2021-3735

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Vendor Advisories for CVE-2021-3735 (3)

Same Patch Batch · n/a · 2022-08-26 · 53 CVEs total

CVE-2021-4216 Artifex Software MuPDF 数字错误漏洞
CVE-2022-36548 Edoc-doctor-appointment-system 跨站脚本漏洞
CVE-2022-36547 Edoc-doctor-appointment-system 跨站脚本漏洞
CVE-2022-36542 Edoc-doctor-appointment-system 安全漏洞
CVE-2022-36545 Edoc-doctor-appointment-system SQL注入漏洞
CVE-2022-36544 Edoc-doctor-appointment-system SQL注入漏洞
CVE-2022-36543 Edoc-doctor-appointment-system SQL注入漏洞
CVE-2022-36546 Edoc-doctor-appointment-system 跨站请求伪造漏洞
CVE-2022-0084 Red Hat Data Grid 安全漏洞
CVE-2022-25625 Broadcom Symantec Privileged Access Management 安全漏洞
CVE-2022-0168 Linux kernel 代码问题漏洞
CVE-2021-3414 Red Hat Satellite 安全漏洞
CVE-2021-3632 Red Hat Single Sign-On 授权问题漏洞
CVE-2021-3585 openstack-tripleo-heat-templates 安全漏洞
CVE-2021-3563 Red Hat OpenStack Platform 安全漏洞
CVE-2021-3754 Red Hat Keycloak 安全漏洞
CVE-2021-3703 Red Hat OpenShift 安全漏洞
CVE-2021-3688 Red Hat JBoss Core Services 信息泄露漏洞
CVE-2021-3669 Linux kernel资源管理错误漏洞
CVE-2021-3644 Red Hat Wildfly 访问控制错误漏洞

Showing top 20 of 53 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: QEMU
Same vendor: n/a
Same weakness: CWE-667

V. Comments for CVE-2021-3735

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