CVE-2021-4090
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I. Basic Information for CVE-2021-4090
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.
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 存在安全漏洞，攻击者可以通过 nfsd4_decode_bitmap() 触发 Linux 内核的缓冲区溢出，以触发拒绝服务，并可能运行代码。
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 5.16 rc2 | - |
II. Public POCs for CVE-2021-4090
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · n/a · 2022-02-18 · 67 CVEs total
| CVE-2022-25299 | 9.8 CRITICAL | Arbitrary File Write |
| CVE-2021-23702 | 7.6 HIGH | Prototype Pollution |
| CVE-2022-25298 | 7.5 HIGH | Path Traversal |
| CVE-2021-46062 | MingSoft MCMS 安全漏洞 | |
| CVE-2022-25134 | TotoLink routers 命令注入漏洞 | |
| CVE-2022-25135 | TotoLink routers 命令注入漏洞 | |
| CVE-2022-25133 | TotoLink routers 命令注入漏洞 | |
| CVE-2021-46110 | Online Shopping Portal 安全漏洞 | |
| CVE-2021-46082 | Moxa Tn-5900 安全漏洞 | |
| CVE-2021-46063 | MingSoft MCMS 代码代码注入漏洞 | |
| CVE-2021-40841 | LiveConfig 路径遍历漏洞 | |
| CVE-2021-46037 | MingSoft MCMS 安全漏洞 | |
| CVE-2021-46036 | MingSoft MCMS 代码问题漏洞 | |
| CVE-2021-30650 | Broadcom Symantec Layer7 API Management OAuth Toolkit跨站脚本漏洞 | |
| CVE-2020-8242 | Packet Tide ExpressionEngine 安全漏洞 | |
| CVE-2021-3657 | Sourceforge mbsync 缓冲区错误漏洞 | |
| CVE-2021-3947 | QEMU 缓冲区错误漏洞 | |
| CVE-2021-3930 | QEMU 安全漏洞 | |
| CVE-2021-20325 | Red Hat Enterprise Linux 代码问题漏洞 | |
| CVE-2021-20322 | Linux kernel 安全特征问题漏洞 |
Showing top 20 of 67 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-4090
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