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CVE-2016-6833 Details

Description

Use-after-free vulnerability in the vmxnet3_io_bar0_write function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (QEMU instance crash) by leveraging failure to check if the device is active.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.4 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6c352ca9b4ee3e1e286ea9e8434bd8e69ac7d0d8	CVE
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html	CVE	Mailing ListThird Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01602.html	CVE	Mailing ListPatchThird Party Advisory
https://security.gentoo.org/glsa/201609-01	CVE	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/12/1	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/18/3	CVE	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/93255	CVE	Third Party AdvisoryVDB Entry
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6c352ca9b4ee3e1e286ea9e8434bd8e69ac7d0d8	[email protected]
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html	[email protected]	Mailing ListThird Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg01602.html	[email protected]	Mailing ListPatchThird Party Advisory
https://security.gentoo.org/glsa/201609-01	[email protected]	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/12/1	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/18/3	[email protected]	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/93255	[email protected]	Third Party AdvisoryVDB Entry

see all 14 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	[email protected]

Affected Products

Product	Versions
qemu qemu	<= 2.6.2 2.7.0 rc0 2.7.0 rc1 2.7.0 rc2
CPE cpe:2.3:a:qemu:qemu:::::::: cpe:2.3:a:qemu:qemu:2.7.0:rc0:::::: cpe:2.3:a:qemu:qemu:2.7.0:rc1:::::: cpe:2.3:a:qemu:qemu:2.7.0:rc2:::::: Remediation No remediation found in references.
debian debian linux	8.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 6, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 12, 2023	CVE Modified	[email protected]
Oct 15, 2020	Modified Analysis	[email protected]
Sep 7, 2018	CVE Modified	[email protected]
Jul 1, 2017	CVE Modified	[email protected]
Dec 12, 2016	Initial Analysis	[email protected]