Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-34866

Quick assessment

Affected
Linux 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，该漏洞源于内核对于eBPF程序的处理。该问题是由于对用户提供的eBPF程序缺乏适当的验证而导致的，这可能会导致类型混淆。此漏洞允许本地攻击者在受影响的Linux内核安装上升级权限。为了利用该漏洞，攻击者可利用该漏洞必须首先获得在目标系统上执行低特权代码的能力。攻击者可利用该漏洞提升权限并在内核上下文中执行任意代码。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.97% · P61
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-34866

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs, which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-14689.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用不兼容类型访问资源(类型混淆)
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
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，该漏洞源于内核对于eBPF程序的处理。该问题是由于对用户提供的eBPF程序缺乏适当的验证而导致的，这可能会导致类型混淆。此漏洞允许本地攻击者在受影响的Linux内核安装上升级权限。为了利用该漏洞，攻击者可利用该漏洞必须首先获得在目标系统上执行低特权代码的能力。攻击者可利用该漏洞提升权限并在内核上下文中执行任意代码。
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
Linux Kernel 5.14-rc3 -

II. Public POCs for CVE-2021-34866

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-34866

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-34866 (2)

IV. Related Vulnerabilities

Same product: Kernel
Same vendor: Linux
Same weakness: CWE-843

V. Comments for CVE-2021-34866

No comments yet

Leave a comment