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I. Basic Information for CVE-2021-3679
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于在5.14-rc3之前版本的Linux内核跟踪模块功能中，用户以特定方式使用跟踪环缓冲区时发现CPU资源不足。攻击者可利用该漏洞导致服务被拒绝。
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
-kernel kernel 5.14-rc3 -
II. Public POCs for CVE-2021-3679
#POC DescriptionSource LinkShenlong Link
1Exploitation for CVE-2021-3679 and document for its fixhttps://github.com/aegistudio/RingBufferDetonatorPOC Details
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III. Intelligence Information for CVE-2021-3679
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New Vulnerabilities
Product: kernel
Vendor: n/a
Same weakness: CWE-400
V. Comments for CVE-2021-3679

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