CVE-2017-7518 in KVM
Summary
A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.
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Responsible
Red Hat, Inc.
Reservation
04/05/2017
Disclosure
07/30/2018
Status
Confirmed
Entries
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerability | CWE | Exp | Cou | CVE |
|---|---|---|---|---|---|
| 102802 | KVM Syscall Emulation Debugging access control | 264 | Not defined | Official fix | CVE-2017-7518 |