CVE-2021-4023
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I. Basic Information for CVE-2021-4023
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in the io-workqueue implementation in the Linux kernel versions prior to 5.15-rc1. The kernel can panic when an improper cancellation operation triggers the submission of new io-uring operations during a shortage of free space. This flaw allows a local user with permissions to execute io-uring requests to possibly crash the system.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
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 5.15-rc1之前版本中的io-workqueue存在安全漏洞，该漏洞源于不正确的取消操作触发了提交新的io-uring，从而导致内核错误。攻击者利用该漏洞（具有执行 io-uring 请求权限的本地用户）导致系统崩溃。
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 versions prior to 5.15-rc1 | - |
II. Public POCs for CVE-2021-4023
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://bugzilla.redhat.com/show_bug.cgi?id=2026484x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-4023
Same Patch Batch · n/a · 2022-03-09 · 50 CVEs total
| CVE-2022-24960 | 6.5 MEDIUM | Use after free vulnerability in PDFTron SDK |
| CVE-2022-26778 | 5.3 MEDIUM | Veritas System Recovery安全漏洞 |
| CVE-2022-0204 | BlueZ 输入验证错误漏洞 | |
| CVE-2022-25552 | Tenda AX1806 缓冲区错误漏洞 | |
| CVE-2021-44631 | TP-Link WR886N 安全漏洞 | |
| CVE-2021-44627 | TP-LINK WR-886N 安全漏洞 | |
| CVE-2021-44629 | TP-LINK WR-886N 安全漏洞 | |
| CVE-2021-44628 | TP-Link WR886N 安全漏洞 | |
| CVE-2021-44630 | TP-Link WR886N 安全漏洞 | |
| CVE-2022-25566 | Tenda AX1806 缓冲区错误漏洞 | |
| CVE-2022-25561 | Tenda AX12 缓冲区错误漏洞 | |
| CVE-2022-25560 | Tenda AX12 缓冲区错误漏洞 | |
| CVE-2022-25558 | Tenda AX1806 缓冲区错误漏洞 | |
| CVE-2022-25557 | Tenda AX1806 缓冲区错误漏洞 | |
| CVE-2022-25556 | Tenda AX12 缓冲区错误漏洞 | |
| CVE-2022-25555 | Tenda AX1806 缓冲区错误漏洞 | |
| CVE-2022-25547 | Tenda AX1806 缓冲区错误漏洞 | |
| CVE-2022-25554 | Tenda AX1806 缓冲区错误漏洞 | |
| CVE-2022-25553 | Tenda AX1806 缓冲区错误漏洞 | |
| CVE-2021-44632 | TP-Link WR886N 安全漏洞 |
Showing top 20 of 50 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-4023
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