CVE-2021-4203
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2021-4203
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View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: NVD (National Vulnerability Database)
Vulnerability Description
A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 资源管理错误漏洞
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，该漏洞源于本地 (Unix) 套接字中的竞争情况可能导致释放后重用。本地用户可以利用它从内核泄漏敏感信息。
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 5.15 rc4 | - |
II. Public POCs for CVE-2021-4203
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-4203
请登录查看更多情报信息。
Same Patch Batch · n/a · 2022-03-25 · 53 CVEs total
| CVE-2022-26263 | Yonyou u8 跨站脚本漏洞 | |
| CVE-2022-0897 | Red Hat libvirt 安全漏洞 | |
| CVE-2022-0435 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2018-25032 | zlib 缓冲区错误漏洞 | |
| CVE-2021-4147 | Red Hat libvirt 安全漏洞 | |
| CVE-2021-3941 | ILM OpenEXR 数字错误漏洞 | |
| CVE-2021-3933 | ILM OpenEXR 输入验证错误漏洞 | |
| CVE-2022-0330 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2022-25577 | ALF-BanCo 信任管理问题漏洞 | |
| CVE-2022-25582 | ClassCMS 跨站脚本漏洞 | |
| CVE-2021-43091 | YesWiki SQL注入漏洞 | |
| CVE-2022-27881 | OpenBSD 安全漏洞 | |
| CVE-2022-27882 | OpenBSD 安全漏洞 | |
| CVE-2021-43636 | TotoLink T10 安全漏洞 | |
| CVE-2021-22100 | cloud foundry 资源管理错误漏洞 | |
| CVE-2021-4157 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-4202 | Linux kernel 资源管理错误漏洞 | |
| CVE-2021-20290 | OpenSC 安全漏洞 | |
| CVE-2021-3567 | SUSE OpenStack Cloud 缓冲区错误漏洞 | |
| CVE-2021-3582 | QEMU 缓冲区错误漏洞 |
Showing top 20 of 53 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
- CVE-2026-8276
bettercap MySQL Server mysql_server.go integer coercion - CVE-2026-8275
bettercap zerogod IPP Service zerogod_ipp_primitives.go ippR - CVE-2026-8270
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-2021-4203
No comments yet