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CVE-2025-2312— cifs.upcall makes an upcall to the wrong namespace in containerized environments

Quick assessment

Affected
cifs-utils cifs-utils
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.

cifs-utils是Pavel Shilovsky个人开发者的一个工具包。提供用于管理 CIFS 网络文件系统安装的实用程序。 cifs-utils存在安全漏洞，该漏洞源于cifs.upcall程序在容器环境中错误地调用命名空间，可能导致主机Kerberos凭据缓存中的敏感数据泄露。

CVSS 5.9 · Medium EPSS 0.21% · P10
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I. Basic Information for CVE-2025-2312

Vulnerability Information
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Vulnerability Title
cifs.upcall makes an upcall to the wrong namespace in containerized environments
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in cifs-utils. When trying to obtain Kerberos credentials, the cifs.upcall program from the cifs-utils package makes an upcall to the wrong namespace in containerized environments. This issue may lead to disclosing sensitive data from the host's Kerberos credentials cache.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对错误会话暴露数据元素
Source: CVE Program / CVE List V5
Vulnerability Title
cifs-utils 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cifs-utils是Pavel Shilovsky个人开发者的一个工具包。提供用于管理 CIFS 网络文件系统安装的实用程序。 cifs-utils存在安全漏洞，该漏洞源于cifs.upcall程序在容器环境中错误地调用命名空间，可能导致主机Kerberos凭据缓存中的敏感数据泄露。
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
cifs-utils cifs-utils 0 ~ 7.2 -

II. Public POCs for CVE-2025-2312

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III. Intelligence Information for CVE-2025-2312

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Patches & Fixes for CVE-2025-2312 (2)

IV. Related Vulnerabilities

Same product: cifs-utils
Same weakness: CWE-488

V. Comments for CVE-2025-2312

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