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I. Basic Information for CVE-2016-6516
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a "double fetch" vulnerability.
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 竞争条件漏洞
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。NFSv4 implementation是其中的一个分布式文件系统协议。 Linux kernel 4.7及之前的版本中的fs/ioctl.c文件中的‘ioctl_file_dedupe_range’函数存在竞争条件漏洞。本地攻击者通过更改‘count’值利用该漏洞造成拒绝服务（基于堆的缓冲区溢出），或获取权限。
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
-n/a n/a -
II. Public POCs for CVE-2016-6516
#POC DescriptionSource LinkShenlong Link
1An demonstration of how to exploit double-fetch vulnerability CVE-2016-6516https://github.com/wpengfei/CVE-2016-6516-exploitPOC Details
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III. Intelligence Information for CVE-2016-6516
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IV. Related Vulnerabilities
Same product: n/a
Same vendor: n/a
V. Comments for CVE-2016-6516

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