Fedora 23 : xen (2016-0049aa6e5d) (Bunker Buster)

high Nessus Plugin ID 92796
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.


x86: Privilege escalation in PV guests [XSA-182, CVE-2016-6258] x86:
Missing SMAP whitelisting in 32-bit exception / event delivery [XSA-183, CVE-2016-6259] virtio: unbounded memory allocation issue [XSA-184, CVE-2016-5403] Qemu: scsi: esp: OOB write access in esp_do_dma [CVE-2016-6351]

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: High

ID: 92796

File Name: fedora_2016-0049aa6e5d.nasl

Version: 2.10

Type: local

Agent: unix

Published: 8/9/2016

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Medium

Score: 6.5


Risk Factor: High

Base Score: 7.2

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


Risk Factor: High

Base Score: 8.8

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

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:xen, cpe:/o:fedoraproject:fedora:23

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

Patch Publication Date: 8/8/2016

Vulnerability Publication Date: 8/2/2016

Reference Information

CVE: CVE-2016-5403, CVE-2016-6258, CVE-2016-6259, CVE-2016-6351

FEDORA: 2016-0049aa6e5d

IAVB: 2016-B-0118-S