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CVE-2018-1093

Quick assessment

Affected
n/a Linux kernel through version 4.15
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基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.15.15及之前的版本中的fs/ext4/balloc.c文件的‘ext4_valid_block_bitmap’函数存在安全漏洞，该漏洞源于程序没有校验bitmap块的数量。攻击者可借助特制的ext4图像利用该漏洞造成拒绝服务（越边界读取和系统崩溃）。

AI Predicted 5.5 Difficulty: Moderate EPSS 1.92% · P79

Possible ATT&CK Techniques 1 AI

T1480 · Execution Guardrails
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I. Basic Information for CVE-2018-1093

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.15.15及之前的版本中的fs/ext4/balloc.c文件的‘ext4_valid_block_bitmap’函数存在安全漏洞，该漏洞源于程序没有校验bitmap块的数量。攻击者可借助特制的ext4图像利用该漏洞造成拒绝服务（越边界读取和系统崩溃）。
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
- Linux kernel through version 4.15 Linux kernel through version 4.15 -

II. Public POCs for CVE-2018-1093

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III. Intelligence Information for CVE-2018-1093

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Patches & Fixes for CVE-2018-1093 (1)

Vendor Advisories for CVE-2018-1093 (9)

Mailing List Discussions for CVE-2018-1093 (4)

Same Patch Batch · n/a · 2018-04-02 · 12 CVEs total

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CVE-2018-1092 Linux kernel 代码问题漏洞
CVE-2018-1094 Linux kernel 代码问题漏洞
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CVE-2018-9173 Cagintranet Networks GetSimple CMS 跨站脚本漏洞
CVE-2018-9174 Desdev DedeCMS 安全漏洞
CVE-2018-9175 Desdev DedeCMS 安全漏洞

IV. Related Vulnerabilities

Same product: Linux kernel through version 4.15
Same vendor: n/a

V. Comments for CVE-2018-1093

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