Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The sg implementation in the Linux kernel through 4.9 does not properly restrict write operations in situations where the KERNEL_DS option is set, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device, related to block/bsg.c and drivers/scsi/sg.c. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-9576.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
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 4.9及之前的版本中的sg实现过程存在安全漏洞，该漏洞源于在设定KERNEL_DS选项时程序没有正确的限制写入操作。本地攻击者可通过访问/dev/sg设备利用该漏洞读取或写入任意的内核内存位置或造成拒绝服务（释放后重用）。
CVSS Information
N/A
Vulnerability Type
N/A