Debian DLA-678-1 : qemu security update

medium Nessus Plugin ID 94257
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 Debian host is missing a security update.


Multiple vulnerabilities have been found in QEMU :


Quick Emulator (Qemu) built with the USB xHCI controller emulation support is vulnerable to an infinite loop issue. It could occur while processing USB command ring in 'xhci_ring_fetch'.


Quick Emulator (Qemu) built with the virtio-9p back-end support is vulnerable to a memory leakage issue. It could occur while doing a I/O read operation in v9fs_read() routine.


Quick Emulator (Qemu) built with the virtio-9p back-end support is vulnerable to a NULL pointer dereference issue. It could occur while doing an I/O vector unmarshalling operation in v9fs_iov_vunmarshal() routine.


Quick Emulator (Qemu) built with the 16550A UART emulation support is vulnerable to a divide by zero issue. It could occur while updating serial device parameters in 'serial_update_parameters'.

For Debian 7 'Wheezy', these problems have been fixed in version 1.1.2+dfsg-6+deb7u17.

We recommend that you upgrade your qemu packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 94257

File Name: debian_DLA-678.nasl

Version: 1.10

Type: local

Agent: unix

Published: 10/26/2016

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.4

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

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: Medium

Base Score: 6

Temporal Score: 5.2

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:qemu, p-cpe:/a:debian:debian_linux:qemu-keymaps, p-cpe:/a:debian:debian_linux:qemu-system, p-cpe:/a:debian:debian_linux:qemu-user, p-cpe:/a:debian:debian_linux:qemu-user-static, p-cpe:/a:debian:debian_linux:qemu-utils, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 10/25/2016

Reference Information

CVE: CVE-2016-8576, CVE-2016-8577, CVE-2016-8578, CVE-2016-8669