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CVE-2016-6888

18
FAUCET Score

CVE-2016-6888 describes an integer overflow vulnerability in QEMU, specifically within the net_tx_pkt_init function, affecting QEMU, Debian, and Red Hat distributions. This flaw allows a local guest OS administrator to trigger a denial of service (QEMU process crash) through an unchecked multiplication leading to a NULL pointer dereference. Rated with a CVSS score of 4.4 (Medium), it requires high privileges (PR:H) but has low attack complexity (AC:L) and can lead to high availability impact (A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.2CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
2.7.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.7.0:rc0:*:*:*:*:*:*
2.7.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.7.0:rc1:*:*:*:*:*:*
2.7.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.7.0:rc2:*:*:*:*:*:*
2.7.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.7.0:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.4MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 79th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 10.0 (Newton)Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 11.0 (Ocata)Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 8.0 (Liberty)Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 9.0 (Mitaka)Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev-10:2.9.0-14.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2016-6888Low

Qemu: net: vmxnet: integer overflow in packet initialisation

Aug 9, 2016

References

git.qemu.org
access.redhat.com / errata/RHSA-2017:2392
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2408
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00038.html
Mailing ListThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2016-08/msg03176.html
PatchThird Party Advisory
security.gentoo.org / glsa/201609-01
Third Party Advisory
openwall.com / lists/oss-security/2016/08/19/10
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/08/19/6
Mailing ListThird Party Advisory
securityfocus.com / bid/92556
Third Party AdvisoryVDB Entry