CVE-2018-14678

CVE Details

Release Date:	2018-07-28
Impact:	Moderate	What is this?

Description

An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.

See more information about CVE-2018-14678 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.8
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel-uek)	ELSA-2018-4210	2018-09-06
Oracle Linux version 7 (kernel-uek)	ELSA-2018-4210	2018-09-06
Oracle Linux version 7 (kernel-uek)	ELSA-2018-4242	2018-10-10
Oracle VM version 3.4 (kernel-uek)	OVMSA-2018-0254	2018-09-07