CVE-2021-32847— Moby HyperKit uninitialized memory use in virtio-sock pci_vtsock_proc_tx
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2021-32847
Vulnerability Information
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Vulnerability Title
Moby HyperKit uninitialized memory use in virtio-sock pci_vtsock_proc_tx
Source: CVE Program / CVE List V5
Vulnerability Description
HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior, a malicious guest can trigger a vulnerability in the host by abusing the disk driver that may lead to the disclosure of the host memory into the virtualized guest. This issue is fixed in commit cf60095a4d8c3cb2e182a14415467afd356e982f.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
HyperKit 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HyperKit是Moby开源的一个用于在应用程序中嵌入虚拟机监控程序功能的工具包。 HyperKit 0.20210107及之前版本存在安全漏洞，该漏洞源于恶意攻击者可以通过滥用磁盘驱动器触发主机中的漏洞，可能会导致主机内存泄露。
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
II. Public POCs for CVE-2021-32847
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Patches & Fixes for CVE-2021-32847 (1)
Other References for CVE-2021-32847 (2)
IV. Related Vulnerabilities
Same vendor: moby
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Tar extraction in moby/go-archive can write outside the dest - CVE-2026-15793
Git source checkout from a bundle file could lead to command
Same weakness: CWE-125
- CVE-2026-54789
mod_auth_openidc has out-of-bounds read and write in state c - CVE-2026-50278
iccDEV: CIccEmbedIO::Read8() size_t underflow - CVE-2026-18716
Vulnerabilities in IBM AIX and PowerVM VIOS - CVE-2026-17423
Vulnerabilities in IBM AIX and PowerVM VIOS - CVE-2026-17124
Vulnerabilities in IBM AIX and PowerVM VIOS
V. Comments for CVE-2021-32847
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