CVE-2021-33655
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I. Basic Information for CVE-2021-33655
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
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，该漏洞源于当通过ioctl cmd FBIOPUT_VSCREENINFO 向内核发送恶意数据时，内核会越界写入内存。
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 | 5.18 5.19.0-rc1 | - |
II. Public POCs for CVE-2021-33655
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · n/a · 2022-07-18 · 32 CVEs total
| CVE-2022-34031 | Nginx 安全漏洞 | |
| CVE-2022-32450 | AnyDesk 后置链接漏洞 | |
| CVE-2022-35404 | ZOHO ManageEngine Password Manager Pro 输入验证错误漏洞 | |
| CVE-2022-24688 | DSK DSKNet 代码问题漏洞 | |
| CVE-2022-24689 | DSK DSKNet 安全漏洞 | |
| CVE-2022-24690 | DSK DSKNet SQL注入漏洞 | |
| CVE-2022-24691 | DSK DSKNet SQL注入漏洞 | |
| CVE-2022-24692 | DSK DSKNet 跨站脚本漏洞 | |
| CVE-2021-33656 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2022-23142 | ZTE ZXEN CG200 资源管理错误漏洞 | |
| CVE-2022-32387 | Kentico 安全漏洞 | |
| CVE-2022-23745 | Capsule Technologies Capsule Workspace 缓冲区错误漏洞 | |
| CVE-2022-34027 | Nginx 安全漏洞 | |
| CVE-2022-34028 | Nginx 安全漏洞 | |
| CVE-2022-34029 | Nginx 缓冲区错误漏洞 | |
| CVE-2022-34030 | Nginx 安全漏洞 | |
| CVE-2022-34643 | riscv-isa-sim 安全漏洞 | |
| CVE-2022-34032 | Nginx 安全漏洞 | |
| CVE-2022-34033 | HTMLDOC 缓冲区错误漏洞 | |
| CVE-2022-34035 | HTMLDOC 缓冲区错误漏洞 |
Showing top 20 of 32 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: kernel
- CVE-2025-26604
Possibility to retrieve bot token by malicious module develo - CVE-2021-35000
OpenBSD Kernel Multicast Routing Uninitialized Memory Inform - CVE-2021-34999
OpenBSD Kernel Multicast Routing Uninitialized Memory Inform - CVE-2021-34981
Linux Kernel Bluetooth CMTP Module Double Free Privilege Esc - CVE-2024-24898
Information Leakage in kernel
Same vendor: n/a
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Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service
V. Comments for CVE-2021-33655
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