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CVE-2020-27825

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 (5.10-rc1) 存在资源管理错误漏洞，该漏洞源于trace ring buffer.c中发现了一个use-after free缺陷。在不同的cpu上并行运行跟踪打开和调整cpu缓冲区大小时存在竞争问题，可能导致拒绝服务问题(DOS)。这个漏洞甚至允许具有特殊用户权限的本地攻击者可利用该漏洞对内核信息泄漏进行威胁。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.28% · P20
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I. Basic Information for CVE-2020-27825

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel (before 5.10-rc1). There was a race problem in trace_open and resize of cpu buffer running parallely on different cpus, may cause a denial of service problem (DOS). This flaw could even allow a local attacker with special user privilege to a kernel information leak threat.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
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。 Linux kernel (5.10-rc1) 存在资源管理错误漏洞，该漏洞源于trace ring buffer.c中发现了一个use-after free缺陷。在不同的cpu上并行运行跟踪打开和调整cpu缓冲区大小时存在竞争问题，可能导致拒绝服务问题(DOS)。这个漏洞甚至允许具有特殊用户权限的本地攻击者可利用该漏洞对内核信息泄漏进行威胁。
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 before kernel 5.10-rc1 -

II. Public POCs for CVE-2020-27825

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III. Intelligence Information for CVE-2020-27825

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Vendor Advisories for CVE-2020-27825 (3)

Mailing List Discussions for CVE-2020-27825 (2)

Same Patch Batch · n/a · 2020-12-11 · 94 CVEs total

CVE-2020-28439 9.8 CRITICAL Command Injection
CVE-2020-28440 9.8 CRITICAL Command Injection
CVE-2020-7791 7.5 HIGH Denial of Service (DoS)
CVE-2020-7793 7.5 HIGH Regular Expression Denial of Service (ReDoS)
CVE-2020-7792 7.5 HIGH Prototype Pollution
CVE-2020-7788 7.3 HIGH Prototype Pollution
CVE-2020-7789 5.6 MEDIUM Command Injection
CVE-2020-7790 5.3 MEDIUM Arbitrary File Read
CVE-2020-19165 PHPSHE SQL注入漏洞
CVE-2020-13987 Contiki OS 缓冲区错误漏洞
CVE-2020-15375 Brocade Fabric OS 输入验证错误漏洞
CVE-2020-29455 SmartyStreets liveAddressPlugin.js 跨站脚本漏洞
CVE-2020-15376 Brocade Fabric OS 安全漏洞
CVE-2020-27730 F5 NGINX Controller 路径遍历漏洞
CVE-2020-35175 Frappe Framework 安全漏洞
CVE-2020-17437 Multiple Embedded TCP/IP 缓冲区错误漏洞
CVE-2020-17438 Contiki 缓冲区错误漏洞
CVE-2020-17439 Contiki 输入验证错误漏洞
CVE-2020-17440 Contiki 安全漏洞
CVE-2020-17441 picoTCP 缓冲区错误漏洞

Showing top 20 of 94 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: kernel
Same vendor: n/a
Same weakness: CWE-362

V. Comments for CVE-2020-27825

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