CVE-2021-20265
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I. Basic Information for CVE-2021-20265
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
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 存在资源管理错误漏洞，该漏洞源于当信号挂起时，unix_stream_recvmsg函数释放内存资源的方式存在缺陷。
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 | Linux kernel 4.5-rc3 | - |
II. Public POCs for CVE-2021-20265
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=1908827x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-20265
Same Patch Batch · n/a · 2021-03-10 · 76 CVEs total
| CVE-2021-0453 | Google Android 安全漏洞 | |
| CVE-2020-35226 | Netgear NETGEAR JGS516PE 注入漏洞 | |
| CVE-2021-0461 | Google Android 缓冲区错误漏洞 | |
| CVE-2021-0460 | Google Android 缓冲区错误漏洞 | |
| CVE-2021-0459 | Google Android 缓冲区错误漏洞 | |
| CVE-2021-0458 | Google Android 输入验证错误漏洞 | |
| CVE-2021-0457 | Google Android 缓冲区错误漏洞 | |
| CVE-2021-0456 | Google Android 缓冲区错误漏洞 | |
| CVE-2021-0455 | Google Android 缓冲区错误漏洞 | |
| CVE-2021-0454 | Google Android 缓冲区错误漏洞 | |
| CVE-2021-0462 | Google Android 安全漏洞 | |
| CVE-2021-0452 | Google Android 安全漏洞 | |
| CVE-2021-0451 | Google Android 安全漏洞 | |
| CVE-2021-0450 | Google Android 安全漏洞 | |
| CVE-2021-0449 | Google Android 安全漏洞 | |
| CVE-2021-0389 | Google Android 安全漏洞 | |
| CVE-2021-0388 | Google Android 安全漏洞 | |
| CVE-2021-0387 | Google Android 竞争条件问题漏洞 | |
| CVE-2021-0386 | Google Android 安全漏洞 | |
| CVE-2021-0385 | Google Android 安全漏洞 |
Showing top 20 of 76 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
Same weakness: CWE-400
- CVE-2026-8187
Open5GS UPF gtp-path.c _gtpv1_u_recv_cb resource consumption - CVE-2026-42343
FastGPT: Uncontrolled Resource Consumption leading to Sandbo - CVE-2026-42212
SolidCAM-GPPL-IDE: XML External Entity (XXE) and billion-lau - CVE-2026-32686
Unbounded exponent in decimal enables unauthenticated DoS - CVE-2026-20188
Cisco Crosswork Network Controller and Cisco Network Service
V. Comments for CVE-2021-20265
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