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I. Basic Information for CVE-2025-31133
Vulnerability Information
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Vulnerability Title
runc container escape via "masked path" abuse due to mount race conditions
Source: NVD (National Vulnerability Database)
Vulnerability Description
runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7 and below, 1.3.0-rc.1 through 1.3.1, 1.4.0-rc.1 and 1.4.0-rc.2 files, runc would not perform sufficient verification that the source of the bind-mount (i.e., the container's /dev/null) was actually a real /dev/null inode when using the container's /dev/null to mask. This exposes two methods of attack: an arbitrary mount gadget, leading to host information disclosure, host denial of service, container escape, or a bypassing of maskedPaths. This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-61
Source: NVD (National Vulnerability Database)
Vulnerability Title
runc 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
runc是Open Container Initiative开源的一款用于根据OCI规范生成和运行容器的CLI（命令行界面）工具。 runc 1.2.7及之前版本、1.3.0-rc.1版本至1.3.1版本、1.4.0-rc.1版本和1.4.0-rc.2版本存在安全漏洞，该漏洞源于未充分验证绑定挂载源的真实性，可能导致主机信息泄露、主机拒绝服务、容器逃逸或绕过maskedPaths。
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
opencontainersrunc < 1.2.8 -
II. Public POCs for CVE-2025-31133
#POC DescriptionSource LinkShenlong Link
1DEPRECATED See CVE-2025-31133, CVE-2025-52565, CVE-2025-52881https://github.com/omne-earth/arcaPOC Details
2Nonehttps://github.com/sahar042/CVE-2025-31133POC Details
3CVE-2025-31133 PoChttps://github.com/skynet-f-nvidia/CVE-2025-31133POC Details
4Learn about CVE-2025-31133https://github.com/C-h4ck-0/Learn-about-cve-2025-31133-pocPOC Details
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III. Intelligence Information for CVE-2025-31133
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IV. Related Vulnerabilities
Same product: runc
Same vendor: opencontainers
Same weakness: CWE-61
V. Comments for CVE-2025-31133

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