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CVE-2022-21504

Quick assessment

Affected
Oracle Corporation Oracle Linux
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.

Oracle UEK 6是美国甲骨文（Oracle）公司的一种 Oracle 构建并通过 Oracle Linux Support 提供支持的 Linux 内核。 Oracle UEK 6 中存在资源管理错误漏洞，该漏洞源于 UEK6 U3 中的代码缺少适当的文件描述符计数。 这导致了一个使用计数错误，它允许一个套接字的文件描述符在内核的另一部分仍在使用时被关闭和释放。 具有本地访问权限的攻击可以对套接字进行操作，并导致拒绝服务。

CVSS 5.5 · Medium EPSS 0.25% · P16

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2022-21504

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The code in UEK6 U3 was missing an appropiate file descriptor count to be missing. This resulted in a use count error that allowed a file descriptor to a socket to be closed and freed while it was still in use by another portion of the kernel. An attack with local access can operate on the socket, and cause a denial of service. CVSS 3.1 Base Score 5.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Oracle UEK 6 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Oracle UEK 6是美国甲骨文（Oracle）公司的一种 Oracle 构建并通过 Oracle Linux Support 提供支持的 Linux 内核。 Oracle UEK 6 中存在资源管理错误漏洞，该漏洞源于 UEK6 U3 中的代码缺少适当的文件描述符计数。 这导致了一个使用计数错误，它允许一个套接字的文件描述符在内核的另一部分仍在使用时被关闭和释放。 具有本地访问权限的攻击可以对套接字进行操作，并导致拒绝服务。
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
Oracle Corporation Oracle Linux Oracle Linux: 7 -

II. Public POCs for CVE-2022-21504

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III. Intelligence Information for CVE-2022-21504

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Patches & Fixes for CVE-2022-21504 (1)

IV. Related Vulnerabilities

Same product: Oracle Linux
Same vendor: Oracle Corporation

V. Comments for CVE-2022-21504

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