CVE-2021-20239
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2021-20239
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View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
非可信指针解引用
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 存在安全漏洞。攻击者可以利用该漏洞主机操作系统中导致拒绝服务。
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 5.4.92 | - |
II. Public POCs for CVE-2021-20239
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-20239
Please Login to view more intelligence information
- https://bugzilla.redhat.com/show_bug.cgi?id=1923636x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-20239
Same Patch Batch · n/a · 2021-05-28 · 43 CVEs total
| CVE-2021-33620 | 6.5 MEDIUM | Squid 输入验证错误漏洞 |
| CVE-2021-20195 | Red Hat Keycloak 输入验证错误漏洞 | |
| CVE-2020-35506 | QEMU 资源管理错误漏洞 | |
| CVE-2020-35504 | QEMU 代码问题漏洞 | |
| CVE-2010-3843 | Ettercap 缓冲区错误漏洞 | |
| CVE-2020-27847 | Dex Idp Dex 安全漏洞 | |
| CVE-2020-25710 | OpenLDAP 安全漏洞 | |
| CVE-2021-3514 | 389-ds-base 代码问题漏洞 | |
| CVE-2021-33587 | css-what 安全漏洞 | |
| CVE-2021-33623 | trim-newlines 资源管理错误漏洞 | |
| CVE-2020-25715 | pki-core 跨站脚本漏洞 | |
| CVE-2020-35505 | QEMU 代码问题漏洞 | |
| CVE-2021-20201 | spice 安全漏洞 | |
| CVE-2021-20236 | ZeroMQ 缓冲区错误漏洞 | |
| CVE-2021-20237 | ZeroMQ 资源管理错误漏洞 | |
| CVE-2021-20240 | gdk-pixbuf 数字错误漏洞 | |
| CVE-2021-20278 | Kiali 授权问题漏洞 | |
| CVE-2021-20292 | Nouveau 资源管理错误漏洞 | |
| CVE-2021-27032 | Autodesk Licensing Services 访问控制错误漏洞 | |
| CVE-2021-21734 | ZTE PON MDU 加密问题漏洞 |
Showing top 20 of 43 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-2026-6667
PgBouncer missing authorization check in KILL_CLIENT admin c - CVE-2026-6666
PgBouncer crash in kill_pool_logins_server_error - CVE-2026-6665
PgBouncer buffer overflow in SCRAM - CVE-2026-6664
PgBouncer integer overflow in PgBouncer network packet parsi - CVE-2026-8127
eladmin Users API Endpoint UserController.java checkLevel ac
Same weakness: CWE-822
- CVE-2025-47408
Untrusted Pointer Dereference in Power Optimization Firmware - CVE-2025-47405
Untrusted Pointer Dereference in Camera - CVE-2026-33114
Microsoft Word Remote Code Execution Vulnerability - CVE-2026-32077
Windows UPnP Device Host Elevation of Privilege Vulnerabilit - CVE-2026-27920
Windows UPnP Device Host Elevation of Privilege Vulnerabilit
V. Comments for CVE-2021-20239
No comments yet