Linux Kernel KVM Module Vulnerability in Emulation of Syscall Instruction

CVE-2017-7518

What is CVE-2017-7518?

A vulnerability was identified in the Linux kernel KVM module that affects versions prior to 4.12. This flaw allows a user or process operating within a virtualized guest environment to exploit the way the KVM module processes the trap flag (TF) bit during the emulation of the syscall instruction. As a result, this flaw could potentially enable the user to escalate their privileges within the guest system. It is important to note that this vulnerability does not affect Linux guests.

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