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I. Basic Information for CVE-2009-4307
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 'super.c' ext4_fill_flex_info函数拒绝服务漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux是最受欢迎的自由电脑操作系统内核。Linux kernel中的fs/ext4/super.c中的ext4_fill_flex_info函数使用户协助式远程攻击者可以借助一个包含大FLEX_BG组装(又称s_log_groups_per_flex值)的超大阻滞的畸形的ext4文件系统引起一个拒绝服务(被零除错误和恐慌)。
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
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II. Public POCs for CVE-2009-4307
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III. Intelligence Information for CVE-2009-4307
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IV. Related Vulnerabilities
V. Comments for CVE-2009-4307

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