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CVE-2021-4155

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.

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。

AI Predicted 5.5 Difficulty: Easy EPSS 0.30% · P20

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2021-4155

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区大小计算不正确
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
- 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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Vendor Advisories for CVE-2021-4155 (3)

Mailing List Discussions for CVE-2021-4155 (1)

Same Patch Batch · n/a · 2022-08-24 · 40 CVEs total

CVE-2022-25903 7.5 HIGH Denial of Service (DoS)
CVE-2022-24375 7.5 HIGH Denial of Service (DoS)
CVE-2021-39815 Google Android 资源管理错误漏洞
CVE-2021-0946 Google Android 缓冲区错误漏洞
CVE-2022-20122 Google Android 资源管理错误漏洞
CVE-2021-4178 Kubernetes 代码问题漏洞
CVE-2021-4209 GnuTLS 代码问题漏洞
CVE-2021-4213 Linux jss 安全漏洞
CVE-2021-4218 Linux kernel 安全漏洞
CVE-2021-4217 Info-ZIP UnZip 代码问题漏洞
CVE-2021-4122 cryptsetup 数据伪造问题漏洞
CVE-2021-4125 Red Hat OpenShift 代码问题漏洞
CVE-2021-4142 Red Hat Satellite 授权问题漏洞
CVE-2021-4158 QEMU 代码问题漏洞
CVE-2021-4159 Linux kernel 安全漏洞
CVE-2021-4041 Ansible-Runner 操作系统命令注入漏洞
CVE-2021-4040 Red Hat AMQ Broker 缓冲区错误漏洞
CVE-2022-37181 72crm 代码问题漏洞
CVE-2022-37178 72crm SQL注入漏洞
CVE-2018-14520 Kirby 跨站脚本漏洞

Showing top 20 of 40 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: kernel
Same vendor: n/a
Same weakness: CWE-131

V. Comments for CVE-2021-4155

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