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CVE-2019-3901

Quick assessment

Affected
The Linux Foundation 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 4.8之前版本存在竞争条件问题漏洞。攻击者利用该漏洞获取受影响组件敏感信息。

AI Predicted 7.8 Difficulty: Hard EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1069 · Permission Groups Discovery
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I. Basic Information for CVE-2019-3901

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
加锁机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 竞争条件问题漏洞
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 4.8之前版本存在竞争条件问题漏洞。攻击者利用该漏洞获取受影响组件敏感信息。
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
The Linux Foundation kernel older then 4.8 -

II. Public POCs for CVE-2019-3901

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III. Intelligence Information for CVE-2019-3901

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Vendor Advisories for CVE-2019-3901 (3)

Mailing List Discussions for CVE-2019-3901 (2)

IV. Related Vulnerabilities

Same product: kernel
Same vendor: The Linux Foundation
Same weakness: CWE-667

V. Comments for CVE-2019-3901

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