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I. Basic Information for CVE-2021-3546
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An out-of-bounds write vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. The flaw occurs while processing the 'VIRTIO_GPU_CMD_GET_CAPSET' command from the guest. It could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service condition, or potential code execution with the privileges of the QEMU process.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
QEMU 缓冲区错误漏洞
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 存在缓冲区错误漏洞,该漏洞源于vhost-user-gpu/virgl.c的virgl_cmd_get_capset()函数存在边界错误。 远程攻击者可利用该漏洞在系统上升级权限。以下产品及版本受到影响:QEMU: 4.1.0, 4.1.1, 4.2.0, 4.2.1, 5.0.0, 5.0.1, 5.1.0, 5.2.0, 6.0.0。
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
VendorProductAffected VersionsCPESubscribe
-QEMU All QEMU versions up to and including 6.0 -
II. Public POCs for CVE-2021-3546
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III. Intelligence Information for CVE-2021-3546
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IV. Related Vulnerabilities
V. Comments for CVE-2021-3546

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