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CVE-2016-2857

27
FAUCET Score

CVE-2016-2857 describes an out-of-bounds heap read vulnerability in the net_checksum_calculate function of QEMU, affecting products from Canonical, Debian, QEMU, and Red Hat. With a CVSS score of 8.4 (HIGH), this vulnerability allows a local guest OS user to trigger a denial of service (crash) by crafting a malicious packet, indicating a low attack complexity but high impact on availability and confidentiality. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Furthermore, the CVE has received no community discussion or media coverage, suggesting a low level of public attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.5.1.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
15.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.4HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 83rd percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qemu-kvm-2:0.12.1.2-2.491.el6_8.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-10:1.5.3-126.el7_3.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6Fixed in: qemu-kvm-rhev-2:0.12.1.2-2.491.el6_8.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7Fixed in: qemu-kvm-rhev-10:2.6.0-27.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7Fixed in: qemu-kvm-rhev-10:2.6.0-27.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7Fixed in: qemu-kvm-rhev-10:2.6.0-27.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 8.0 (Liberty)Fixed in: qemu-kvm-rhev-10:2.6.0-27.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 9.0 (Mitaka)Fixed in: qemu-kvm-rhev-10:2.6.0-27.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev-10:2.6.0-28.el7_3.6
View patch
redhatpatch availablevia redhat_api
Product: RHEV 3.X Hypervisor and Agents for RHEL-6Fixed in: qemu-kvm-rhev-2:0.12.1.2-2.491.el6_8.6
View patch
redhatpatch availablevia redhat_api
Product: RHEV 3.X Hypervisor and Agents for RHEL-7Fixed in: qemu-kvm-rhev-10:2.6.0-28.el7_3.6
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kvm

Vendor Advisories (1)

redhatCVE-2016-2857Low

Qemu: net: out of bounds read in net_checksum_calculate()

Feb 17, 2016

References

git.qemu.org
rhn.redhat.com / errata/RHSA-2016-2670.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2671.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2704.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2705.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2706.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0083.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0309.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0334.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0344.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2017-0350.html
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00038.html
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/03/03/9
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/03/07/3
Mailing ListThird Party Advisory
securityfocus.com / bid/84130
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2974-1
Third Party Advisory