Medium severity4.4NVD Advisory· Published Dec 10, 2016· Updated Jun 17, 2026

CVE-2016-6833

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

QEMU/Qemu5 versions
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*range: <=2.6.2
- 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:*:*:*:*:*:*
- (no CPE)
Debian/linux
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
osv-coords14 versions
pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1 pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1 pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012 pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1 pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4 pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1 pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4 pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012 pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4 pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1
< 2.3.1-21.1+ 13 more
- (no CPE)range: < 2.3.1-21.1
- (no CPE)range: < 2.3.1-21.1
- (no CPE)range: < 2.0.2-48.22.1
- (no CPE)range: < 2.0.2-48.22.1
- (no CPE)range: < 2.3.1-21.1
- (no CPE)range: < 4.5.3_10-20.1
- (no CPE)range: < 4.4.4_08-40.2
- (no CPE)range: < 4.5.3_10-20.1
- (no CPE)range: < 4.4.4_04-22.22.2
- (no CPE)range: < 4.4.4_08-40.2
- (no CPE)range: < 4.4.4_04-22.22.2
- (no CPE)range: < 4.5.3_10-20.1
- (no CPE)range: < 4.4.4_08-40.2
- (no CPE)range: < 4.5.3_10-20.1

Patches

Vulnerability mechanics

References

lists.gnu.org/archive/html/qemu-devel/2016-08/msg01602.htmlnvdMailing ListPatchThird Party Advisory
www.openwall.com/lists/oss-security/2016/08/12/1nvdMailing ListThird Party Advisory
www.openwall.com/lists/oss-security/2016/08/18/3nvdMailing ListThird Party Advisory
www.securityfocus.com/bid/93255nvdThird Party AdvisoryVDB Entry
lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlnvdMailing ListThird Party Advisory
security.gentoo.org/glsa/201609-01nvdThird Party Advisory
git.qemu.orgnvd

News mentions

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cvss	0.286
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000