CVE-2021-41864
Quick assessment
Affected
n/a n/a
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。overlayfs是其中的一套文件系统。 Linux kernel 存在输入验证错误漏洞，该漏洞源于在 Linux 内核的 bpf 中的 kernel/bpf/stackmap.c 中的 prealloc_elems_and_freelist 中发现了越界 (OOB) 内存写入缺陷。攻击者可利用该漏洞访问超出边界的内存，从而导致系统崩溃或内部内核信息泄漏。
Possible ATT&CK Techniques 2 AI
T1203 · Exploitation for Client Execution T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-41864
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 输入验证错误漏洞
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。overlayfs是其中的一套文件系统。 Linux kernel 存在输入验证错误漏洞，该漏洞源于在 Linux 内核的 bpf 中的 kernel/bpf/stackmap.c 中的 prealloc_elems_and_freelist 中发现了越界 (OOB) 内存写入缺陷。攻击者可利用该漏洞访问超出边界的内存，从而导致系统崩溃或内部内核信息泄漏。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2021-41864
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-41864 (1)
Vendor Advisories for CVE-2021-41864 (1)
Mailing List Discussions for CVE-2021-41864 (4)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYKURLXBB2555ASWMPDNMBUPD6AG2JKQ/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7BLLVKYAIETEORUPTFO3TR3C33ZPFXQM/ vendor-advisory x_refsource_FEDORA
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Other References for CVE-2021-41864 (1)
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https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12 x_refsource_CONFIRM
Same Patch Batch · n/a · 2021-10-01 · 53 CVEs total
| CVE-2021-40926 | GetId3 跨站脚本漏洞 | |
| CVE-2021-41459 | Gpac MP4Box 缓冲区错误漏洞 | |
| CVE-2021-41457 | Gpac MP4Box 缓冲区错误漏洞 | |
| CVE-2021-41649 | PuneethReddyHc Online Shopping System Advanced SQL注入漏洞 | |
| CVE-2021-33626 | Insyde InsydeH2O 安全漏洞 | |
| CVE-2021-35297 | Scalabium dBase Viewer 安全漏洞 | |
| CVE-2021-40960 | Galera WebTemplate 路径遍历漏洞 | |
| CVE-2021-41456 | Gpac MP4Box 缓冲区错误漏洞 | |
| CVE-2021-40924 | bugs 跨站脚本漏洞 | |
| CVE-2021-40927 | Spotify-for-Alfred 跨站脚本漏洞 | |
| CVE-2021-40925 | Faveo Helpdesk 跨站脚本漏洞 | |
| CVE-2021-40968 | spotweb 跨站脚本漏洞 | |
| CVE-2021-40928 | FlexTV beta 跨站脚本漏洞 | |
| CVE-2021-40970 | spotweb 跨站脚本漏洞 | |
| CVE-2021-40969 | spotweb 跨站脚本漏洞 | |
| CVE-2021-40972 | spotweb 跨站脚本漏洞 | |
| CVE-2021-40971 | spotweb 跨站脚本漏洞 | |
| CVE-2021-40975 | Ecommerce-CodeIgniter-Bootstrap 跨站脚本漏洞 | |
| CVE-2021-40973 | spotweb 跨站脚本漏洞 | |
| CVE-2021-41461 | Portlandlabs Concrete5 跨站脚本漏洞 |
Showing top 20 of 53 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-41864
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