Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel本地拒绝服务和权限提升漏洞
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux Kernel制的KVM子系统中x86模拟器将段选择器(用于内存分段和保护)加载到段寄存器的方式存在漏洞。在一些guest系统配置中，非特权的guest用户可以利用这个漏洞，导致guest崩溃或在guest中提升权限。
CVSS Information
N/A
Vulnerability Type
N/A