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I. Basic Information for CVE-2021-4155
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
缓冲区大小计算不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Red Hat Enterprise Linux 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Enterprise Linux是美国红帽(Red Hat)公司的面向企业用户的Linux操作系统 Red Hat Enterprise Linux 存在安全漏洞,该漏洞源于在XFS文件系统中的XFS IOC ALLOCSP IOCTL允许大小未对齐的文件增加的方式中发现了一个数据泄漏缺陷。本地攻击者可利用该漏洞可以利用这个漏洞来泄漏XFS文件系统上的数据,否则他们无法访问这些数据。
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
VendorProductAffected VersionsCPESubscribe
-kernel Fixed in Kernel v5.16 -
II. Public POCs for CVE-2021-4155
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III. Intelligence Information for CVE-2021-4155
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IV. Related Vulnerabilities
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