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CVE-2021-20239

Quick assessment

Affected
n/a kernel
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.

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。攻击者可以利用该漏洞主机操作系统中导致拒绝服务。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2021-20239

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
非可信指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 缓冲区错误漏洞
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。攻击者可以利用该漏洞主机操作系统中导致拒绝服务。
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
- kernel kernel 5.4.92 -

II. Public POCs for CVE-2021-20239

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III. Intelligence Information for CVE-2021-20239

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Vendor Advisories for CVE-2021-20239 (1)

Same Patch Batch · n/a · 2021-05-28 · 43 CVEs total

CVE-2021-33620 6.5 MEDIUM Squid 输入验证错误漏洞
CVE-2021-20195 Red Hat Keycloak 输入验证错误漏洞
CVE-2020-35506 QEMU 资源管理错误漏洞
CVE-2020-35504 QEMU 代码问题漏洞
CVE-2010-3843 Ettercap 缓冲区错误漏洞
CVE-2020-27847 Dex Idp Dex 安全漏洞
CVE-2020-25710 OpenLDAP 安全漏洞
CVE-2021-3514 389-ds-base 代码问题漏洞
CVE-2021-33587 css-what 安全漏洞
CVE-2021-33623 trim-newlines 资源管理错误漏洞
CVE-2020-25715 pki-core 跨站脚本漏洞
CVE-2020-35505 QEMU 代码问题漏洞
CVE-2021-20201 spice 安全漏洞
CVE-2021-20236 ZeroMQ 缓冲区错误漏洞
CVE-2021-20237 ZeroMQ 资源管理错误漏洞
CVE-2021-20240 gdk-pixbuf 数字错误漏洞
CVE-2021-20278 Kiali 授权问题漏洞
CVE-2021-20292 Nouveau 资源管理错误漏洞
CVE-2021-27032 Autodesk Licensing Services 访问控制错误漏洞
CVE-2021-21734 ZTE PON MDU 加密问题漏洞

Showing top 20 of 43 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: kernel
Same vendor: n/a
Same weakness: CWE-822

V. Comments for CVE-2021-20239

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