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CVE-2021-29155

Quick assessment

Affected
n/a n/a
Exploitation
Public or AI PoC available; prioritize validation
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存在缓冲区错误漏洞，攻击者可利用该漏洞可以通过猜测的Linux内核的越界负载绕过对数据的访问限制。

AI Predicted 5.3 Difficulty: Hard EPSS 1.07% · P64
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I. Basic Information for CVE-2021-29155

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer arithmetic operations, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
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存在缓冲区错误漏洞，攻击者可利用该漏洞可以通过猜测的Linux内核的越界负载绕过对数据的访问限制。
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
- n/a n/a -

II. Public POCs for CVE-2021-29155

# POC Description Source Link Shenlong Link
1 Proof of Concept CVE-2021-29155 https://github.com/benschlueter/CVE-2021-29155 POC Details
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III. Intelligence Information for CVE-2021-29155

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Patches & Fixes for CVE-2021-29155 (7)

Mailing List Discussions for CVE-2021-29155 (4)

Other References for CVE-2021-29155 (1)

Same Patch Batch · n/a · 2021-04-20 · 13 CVEs total

CVE-2020-35314 WonderCMS 操作系统命令注入漏洞
CVE-2020-35313 WonderCMS 代码问题漏洞
CVE-2021-30464 OMICRON StationGuard 资源管理错误漏洞
CVE-2020-14105 Xiaomi 10 安全漏洞
CVE-2021-28156 Hashicorp HashiCorp Consul 安全漏洞
CVE-2020-25864 HashiCorp Consul and Consul Enterprise 跨站脚本漏洞
CVE-2021-28492 unisys stealth(core) 安全漏洞
CVE-2021-28793 Lex Li vscode-restructuredtext 访问控制错误漏洞
CVE-2021-25681 ADTRAN AdTran-Personal-Phone-Manager-Vulns 安全漏洞
CVE-2021-25680 ADTRAN AdTran-Personal-Phone-Manager-Vulns 跨站脚本漏洞
CVE-2021-25679 ADTRAN AdTran-Personal-Phone-Manager-Vulns 跨站脚本漏洞
CVE-2021-30496 Telegram 安全漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-29155

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