CVE-2021-20265
Quick assessment
Affected
n/a kernel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-20265
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
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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Patches & Fixes for CVE-2021-20265 (1)
Vendor Advisories for CVE-2021-20265 (2)
-
https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
-
https://bugzilla.redhat.com/show_bug.cgi?id=1908827 x_refsource_MISC
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 → →
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V. Comments for CVE-2021-20265
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