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Fencer Vulns
high 8.4

CVE-2016-2857 json

The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap…

published 2016-04-08 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3930

cvss
8.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap read and crash) via the payload length in a crafted packet.

Patch / fix

  • qemu Debian 14, Debian 13, Debian 12 1:2.6+dfsg-1

debian advisories DEBIAN-CVE-2016-2857

  • qemu Ubuntu 14.04 LTS 2.0.0+dfsg-2ubuntu1.24
  • qemu Ubuntu 16.04 LTS 1:2.5+dfsg-5ubuntu10.1

ubuntu advisories UBUNTU-CVE-2016-2857

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • qemu-kvm RHEL 6 2:0.12.1.2-2.491.el6_8.6
  • qemu-img RHEL 6 2:0.12.1.2-2.491.el6_8.6
  • qemu-kvm-tools RHEL 6 2:0.12.1.2-2.491.el6_8.6
  • qemu-guest-agent RHEL 6 2:0.12.1.2-2.491.el6_8.6
  • qemu-kvm-rhev openstack 5 2:0.12.1.2-2.491.el6_8.7
  • qemu-img-rhev openstack 5 2:0.12.1.2-2.491.el6_8.7
  • qemu-kvm-rhev-tools openstack 5 2:0.12.1.2-2.491.el6_8.7
  • qemu-kvm-rhev RHEL 7 10:2.6.0-28.el7_3.6

red hat advisories RHSA-2017:0309RHSA-2017:0334RHSA-2017:0350RHSA-2017:0344RHSA-2016:2671RHSA-2016:2704

  • kvm SLES for SAP 11 SP4, SLES 11 SP4 1.4.2-44.1
  • qemu SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 2.3.1-14.1
  • kvm SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS 1.4.2-46.1
  • qemu SLES for SAP 12, SLES 12, SLED 12 2.0.2-48.19.1

suse advisories SUSE-SU-2016:1785-1SUSE-SU-2016:1703-1SUSE-SU-2016:1698-1SUSE-SU-2016:1560-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-2857 updated cvss 4.7

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

  • Red Hat Enterprise Linux 5 kvm
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 6 qemu-kvm-rhev
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) qemu-img 1.5.3-126.el7_3.3, qemu-kvm 1.5.3-126.el7_3.3, qemu-kvm-tools 1.5.3-126.el7_3.3, qemu-kvm-common 1.5.3-126.el7_3.3 Red Hat Enterprise Linux ComputeNode Optional (v. 7) qemu-img 1.5.3-126.el7_3.3, qemu-kvm 1.5.3-126.el7_3.3, qemu-kvm-tools 1.5.3-126.el7_3.3, qemu-kvm-common 1.5.3-126.el7_3.3
    fixed: vendor fix RHSA-2017:0083
  • Red Hat Enterprise Linux Desktop (v. 6) qemu-img 0.12.1.2-2.491.el6_8.6, qemu-kvm 0.12.1.2-2.491.el6_8.6, qemu-kvm-tools 0.12.1.2-2.491.el6_8.6, qemu-guest-agent 0.12.1.2-2.491.el6_8.6 Red Hat Enterprise Linux HPC Node (v. 6) qemu-img 0.12.1.2-2.491.el6_8.6, qemu-kvm 0.12.1.2-2.491.el6_8.6, qemu-kvm-tools 0.12.1.2-2.491.el6_8.6, qemu-guest-agent 0.12.1.2-2.491.el6_8.6
    fixed: vendor fix RHSA-2017:0309
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 qemu-img-rhev 0.12.1.2-2.491.el6_8.7, qemu-kvm-rhev 0.12.1.2-2.491.el6_8.7, qemu-kvm-rhev-tools 0.12.1.2-2.491.el6_8.7
    fixed: vendor fix RHSA-2017:0334
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 qemu-img-rhev 2.6.0-27.el7, qemu-kvm-rhev 2.6.0-27.el7, qemu-kvm-tools-rhev 2.6.0-27.el7, qemu-kvm-common-rhev 2.6.0-27.el7
    fixed: vendor fix RHSA-2016:2706
  • Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 qemu-img-rhev 2.6.0-27.el7, qemu-kvm-rhev 2.6.0-27.el7, qemu-kvm-tools-rhev 2.6.0-27.el7, qemu-kvm-common-rhev 2.6.0-27.el7
    fixed: vendor fix RHSA-2016:2705
  • Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 qemu-img-rhev 2.6.0-27.el7, qemu-kvm-rhev 2.6.0-27.el7, qemu-kvm-tools-rhev 2.6.0-27.el7, qemu-kvm-common-rhev 2.6.0-27.el7
    fixed: vendor fix RHSA-2016:2704
show 10 more
  • Red Hat Enterprise Linux Server (v. 6) qemu-img 0.12.1.2-2.491.el6_8.6, qemu-kvm 0.12.1.2-2.491.el6_8.6, qemu-kvm-tools 0.12.1.2-2.491.el6_8.6, qemu-guest-agent 0.12.1.2-2.491.el6_8.6
    fixed: vendor fix RHSA-2017:0309
  • Red Hat Enterprise Linux Server (v. 7) qemu-img 1.5.3-126.el7_3.3, qemu-kvm 1.5.3-126.el7_3.3, qemu-kvm-tools 1.5.3-126.el7_3.3, qemu-kvm-common 1.5.3-126.el7_3.3
    fixed: vendor fix RHSA-2017:0083
  • Red Hat Enterprise Linux Workstation (v. 6) qemu-img 0.12.1.2-2.491.el6_8.6, qemu-kvm 0.12.1.2-2.491.el6_8.6, qemu-kvm-tools 0.12.1.2-2.491.el6_8.6, qemu-guest-agent 0.12.1.2-2.491.el6_8.6
    fixed: vendor fix RHSA-2017:0309
  • Red Hat Enterprise Linux Workstation (v. 7) qemu-img 1.5.3-126.el7_3.3, qemu-kvm 1.5.3-126.el7_3.3, qemu-kvm-tools 1.5.3-126.el7_3.3, qemu-kvm-common 1.5.3-126.el7_3.3
    fixed: vendor fix RHSA-2017:0083
  • Red Hat OpenStack Platform 8.0 (Liberty) qemu-img-rhev 2.6.0-27.el7, qemu-kvm-rhev 2.6.0-27.el7, qemu-kvm-tools-rhev 2.6.0-27.el7, qemu-kvm-common-rhev 2.6.0-27.el7
    fixed: vendor fix RHSA-2016:2670
  • Red Hat OpenStack Platform 9.0 qemu-img-rhev 2.6.0-27.el7, qemu-kvm-rhev 2.6.0-27.el7, qemu-kvm-tools-rhev 2.6.0-27.el7, qemu-kvm-common-rhev 2.6.0-27.el7
    fixed: vendor fix RHSA-2016:2671
  • Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts qemu-img-rhev 2.6.0-28.el7_3.6, qemu-kvm-rhev 2.6.0-28.el7_3.6, qemu-kvm-tools-rhev 2.6.0-28.el7_3.6, qemu-kvm-common-rhev 2.6.0-28.el7_3.6
    fixed: vendor fix RHSA-2017:0350
  • Red Hat RHEV Agents (vdsm) qemu-img-rhev 0.12.1.2-2.491.el6_8.6, qemu-kvm-rhev 0.12.1.2-2.491.el6_8.6, qemu-kvm-rhev-tools 0.12.1.2-2.491.el6_8.6
    fixed: vendor fix RHSA-2017:0344
  • Red Hat RHEV-H and VDSM for 7 Hosts qemu-img-rhev 2.6.0-28.el7_3.6, qemu-kvm-rhev 2.6.0-28.el7_3.6, qemu-kvm-tools-rhev 2.6.0-28.el7_3.6, qemu-kvm-common-rhev 2.6.0-28.el7_3.6
    fixed: vendor fix RHSA-2017:0350
  • Red Hat OpenStack Platform 10 (Newton) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev Red Hat OpenStack Platform 11 (Ocata) qemu-kvm-rhev
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
NVD 2.0 3.6 AV:L/AC:L/Au:N/C:P/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.