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CVE-2017-7518

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2018-0412-01
Posted Mar 6, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0412-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: Kernel: KVM: MMU potential stack buffer overrun during page walks Kernel: KVM: debug exception via syscall emulation.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2017-12188, CVE-2017-7518
SHA-256 | 9a54b07277bfff301639af511a4c8cf54910763ea7b31ebde2aaaf49bc0dcc7e
Download | Favorite | View
Red Hat Security Advisory 2018-0395-01
Posted Mar 6, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0395-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. These updated kernel packages include several security issues and numerous bug fixes.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-12188, CVE-2017-7518
SHA-256 | 29fea4f7c483d5c4d6cc5018a225a967284330ae9e73afc589eab9a2da529a2c
Download | Favorite | View
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