CVE-2021-4159
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I. Basic Information for CVE-2021-4159
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过数据查询的敏感数据暴露
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，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
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://security-tracker.debian.org/tracker/CVE-2021-4159x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=2036024x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2021-4159x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-4159
Same Patch Batch · n/a · 2022-08-24 · 41 CVEs total
| CVE-2022-25903 | 7.5 HIGH | Denial of Service (DoS) |
| CVE-2022-24375 | 7.5 HIGH | Denial of Service (DoS) |
| CVE-2021-4142 | Red Hat Satellite 授权问题漏洞 | |
| CVE-2021-39815 | Google Android 资源管理错误漏洞 | |
| 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-2021-0946 | Google Android 缓冲区错误漏洞 | |
| 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 41 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-202
- CVE-2026-30778
Apache SkyWalking: The SkyWalking OAP /debugging/config/dump - CVE-2026-33530
InvenTree Vulnerable to ORM Filter Injection - CVE-2026-3546
e-shot <= 1.0.2 - Missing Authorization to Authenticated (Su - CVE-2026-25050
Vendure vulnerable to timing attack that enables user enumer - CVE-2025-64528
Users are able to find users by name even when `enable_names
V. Comments for CVE-2021-4159
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