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CVE-2020-12826

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基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 5.6.5之前版本（CID-7395ea4e65c2）中的include / linux / sched.h文件中的exec_id变量存在安全漏洞。攻击者可利用该漏洞绕过‘do_notify_parent’函数的保护机制。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.71% · P51

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection
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I. Basic Information for CVE-2020-12826

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat.
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基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 5.6.5之前版本（CID-7395ea4e65c2）中的include / linux / sched.h文件中的exec_id变量存在安全漏洞。攻击者可利用该漏洞绕过‘do_notify_parent’函数的保护机制。
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 -

II. Public POCs for CVE-2020-12826

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III. Intelligence Information for CVE-2020-12826

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Patches & Fixes for CVE-2020-12826 (1)

Vendor Advisories for CVE-2020-12826 (5)

Mailing List Discussions for CVE-2020-12826 (4)

Other References for CVE-2020-12826 (1)

Same Patch Batch · n/a · 2020-05-12 · 14 CVEs total

CVE-2020-8156 Nextcloud Mail 信任管理问题漏洞
CVE-2020-8154 Nextcloud Server 安全漏洞
CVE-2020-8155 Nextcloud Server 跨站脚本漏洞
CVE-2020-8153 Nextcloud Groupfolders app 访问控制错误漏洞
CVE-2020-8151 Active Resource 信息泄露漏洞
CVE-2020-8159 actionpack_page-caching gem 路径遍历漏洞
CVE-2020-1939 Apache NuttX 代码问题漏洞
CVE-2020-5897 F5 BIG-IP APM和BIG-IP APM Clients 资源管理错误漏洞
CVE-2020-5896 F5 BIG-IP APM和BIG-IP APM Clients 安全漏洞
CVE-2020-5898 F5 BIG-IP APM和BIG-IP APM Clients 安全漏洞
CVE-2020-12823 OpenConnect 缓冲区错误漏洞
CVE-2020-12825 libcroco 缓冲区错误漏洞
CVE-2020-12772 Ignite Realtime Spark 信息泄露漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

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