CVE-2021-4002
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I. Basic Information for CVE-2021-4002
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
清理环节不完整
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
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，本地用户可以利用此漏洞未经授权访问某些数据。
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 | affects kernel v3.6 and later through v5.15.5. | - |
II. Public POCs for CVE-2021-4002
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://www.openwall.com/lists/oss-security/2021/11/25/1x_refsource_MISC
- https://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=2025726x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-4002
Same Patch Batch · n/a · 2022-03-03 · 37 CVEs total
| CVE-2021-45819 | 6.4 MEDIUM | Wordline HIDCCEMonitorSVC 代码问题漏洞 |
| CVE-2021-3620 | Red Hat Ansible 安全漏洞 | |
| CVE-2022-25138 | Axelor Open Suite 跨站脚本漏洞 | |
| CVE-2022-26127 | FRRouting FRR 缓冲区错误漏洞 | |
| CVE-2022-26128 | FRRouting FRR 缓冲区错误漏洞 | |
| CVE-2022-26129 | FRRouting FRR 缓冲区错误漏洞 | |
| CVE-2022-23898 | MingSoft Mcms SQL注入漏洞 | |
| CVE-2022-23899 | MingSoft Mcms SQL注入漏洞 | |
| CVE-2022-25125 | MingSoft Mcms SQL注入漏洞 | |
| CVE-2022-22700 | CyberArk Identity 安全特征问题漏洞 | |
| CVE-2021-43774 | Fujifilm DocuCentre 加密问题漏洞 | |
| CVE-2021-3609 | Linux kernel 竞争条件问题漏洞 | |
| CVE-2021-3602 | Buildah 信息泄露漏洞 | |
| CVE-2021-3762 | Clair 路径遍历漏洞 | |
| CVE-2022-23051 | PeTeReport 跨站脚本漏洞 | |
| CVE-2022-23052 | PeTeReport 跨站请求伪造漏洞 | |
| CVE-2022-25220 | PeTeReport 跨站脚本漏洞 | |
| CVE-2022-22943 | VMware Tools for Windows 代码问题漏洞 | |
| CVE-2021-3640 | Linux kernel 资源管理错误漏洞 | |
| CVE-2022-24573 | Element-IT HTTP Commander 跨站脚本漏洞 |
Showing top 20 of 37 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: kernel
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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
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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-459
- CVE-2025-66467
Apache CloudStack: MinIO policy remains intact on bucket del - CVE-2026-28268
Vikunja Vulnerable to Account Takeover via Password Reset To - CVE-2026-3304
Multer vulnerable to Denial of Service via incomplete cleanu - CVE-2026-28196
JetBrains TeamCity 安全漏洞 - CVE-2025-15331
Tanium addressed an uncontrolled resource consumption vulner
V. Comments for CVE-2021-4002
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