Fedora 26 : xen (2017-5c6a9b07a3)

critical Nessus Plugin ID 101638


New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote Fedora host is missing a security update.


xen: various flaws (#1463247) blkif responses leak backend stack data [XSA-216] page transfer may allow PV guest to elevate privilege [XSA-217] Races in the grant table unmap code [XSA-218] x86:
insufficient reference counts during shadow emulation [XSA-219] x86:
PKRU and BND* leakage between vCPU-s [XSA-220] NULL pointer deref in event channel poll [XSA-221] (#1463231) stale P2M mappings due to insufficient error checking [XSA-222] ARM guest disabling interrupt may crash Xen [XSA-223] grant table operations mishandle reference counts [XSA-224] arm: vgic: Out-of-bound access when sending SGIs [XSA-225]

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected xen package.

See Also


Plugin Details

Severity: Critical

ID: 101638

File Name: fedora_2017-5c6a9b07a3.nasl

Version: 3.8

Type: local

Agent: unix

Published: 7/17/2017

Updated: 6/3/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: High

Score: 7.3


Risk Factor: Critical

Base Score: 10

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C


Risk Factor: Critical

Base Score: 10

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:xen, cpe:/o:fedoraproject:fedora:26

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 7/7/2017

Vulnerability Publication Date: 7/5/2017

Reference Information

CVE: CVE-2017-10911, CVE-2017-10912, CVE-2017-10913, CVE-2017-10915, CVE-2017-10916, CVE-2017-10917, CVE-2017-10918, CVE-2017-10919, CVE-2017-10920, CVE-2017-10923

FEDORA: 2017-5c6a9b07a3

IAVB: 2017-B-0074-S