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CVE-2021-4159

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 存在安全漏洞，具有向内核插入eBPF代码权限的本地攻击者可以利用该漏洞泄露内核内部内存详细信息。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.25% · P14

Possible ATT&CK Techniques 1 AI

T1003.001 · LSASS Memory
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I. Basic Information for CVE-2021-4159

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in the Linux kernel's EBPF verifier when handling internal data structures. Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
通过数据查询的敏感数据暴露
Source: CVE Program / CVE List V5
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，具有向内核插入eBPF代码权限的本地攻击者可以利用该漏洞泄露内核内部内存详细信息。
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 Fixed in v5.7-rc1 -

II. Public POCs for CVE-2021-4159

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III. Intelligence Information for CVE-2021-4159

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Patches & Fixes for CVE-2021-4159 (1)

Vendor Advisories for CVE-2021-4159 (3)

Mailing List Discussions for CVE-2021-4159 (1)

Same Patch Batch · n/a · 2022-08-24 · 40 CVEs total

CVE-2022-25903 7.5 HIGH Denial of Service (DoS)
CVE-2022-24375 7.5 HIGH Denial of Service (DoS)
CVE-2021-39815 Google Android 资源管理错误漏洞
CVE-2021-0946 Google Android 缓冲区错误漏洞
CVE-2022-20122 Google Android 资源管理错误漏洞
CVE-2021-4178 Kubernetes 代码问题漏洞
CVE-2021-4209 GnuTLS 代码问题漏洞
CVE-2021-4213 Linux jss 安全漏洞
CVE-2021-4218 Linux kernel 安全漏洞
CVE-2021-4217 Info-ZIP UnZip 代码问题漏洞
CVE-2021-4122 cryptsetup 数据伪造问题漏洞
CVE-2021-4125 Red Hat OpenShift 代码问题漏洞
CVE-2021-4142 Red Hat Satellite 授权问题漏洞
CVE-2021-4155 Red Hat Enterprise Linux 权限许可和访问控制问题漏洞
CVE-2021-4158 QEMU 代码问题漏洞
CVE-2021-4041 Ansible-Runner 操作系统命令注入漏洞
CVE-2021-4040 Red Hat AMQ Broker 缓冲区错误漏洞
CVE-2022-37181 72crm 代码问题漏洞
CVE-2022-37178 72crm SQL注入漏洞
CVE-2018-14520 Kirby 跨站脚本漏洞

Showing top 20 of 40 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: kernel
Same vendor: n/a
Same weakness: CWE-202

V. Comments for CVE-2021-4159

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