Linux Kernel vm86 Syscall不能处理FPU异常本地拒绝服务漏洞

Linux Kernel是一款开源的Linux操作系统。 Linux Kernel VM86系统调用存在一个安全漏洞，在任务切换过程中存在不能处理FPU异常，允许本地攻击者可以利用漏洞使系统崩溃。 0 Linux Kernel 目前没有详细解决方案提供： https://kernel.org/ / This software is provided by the copyright owner "as is" and any expressed or implied warranties, including, but not limited to, the implied...

Vm86 - Syscall Task Switch Kernel Panic Denial of Service / Privilege Escalation

Source: http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/ Introduction Problem description: The initial observation was, that the linux vm86 syscall, which allows to use the virtual-8086 mode from userspace for emulating of old 8086 software as done with dosemu, was prone to...