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Fencer Vulns
medium 5.5

CVE-2016-5403 json

The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cause a denial of service (memory consumpt…

published 2016-08-02 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-6348

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) by submitting requests without waiting for completion.

Patch / fix

  • qemu Debian 14, Debian 13, Debian 12 1:2.6+dfsg-3.1

debian advisories DEBIAN-CVE-2016-5403

  • xen Ubuntu 14.04 LTS 4.4.2-0ubuntu0.14.04.7
  • qemu Ubuntu 14.04 LTS 2.0.0+dfsg-2ubuntu1.30
  • qemu Ubuntu 16.04 LTS 1:2.5+dfsg-5ubuntu10.6

ubuntu advisories UBUNTU-CVE-2016-5403

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

  • kvm RHEL 5 VIRTUALIZATION 83-276.el5_11
  • kmod-kvm RHEL 5 VIRTUALIZATION 83-276.el5_11
  • kvm-tools RHEL 5 VIRTUALIZATION 83-276.el5_11
  • kvm-qemu-img RHEL 5 VIRTUALIZATION 83-276.el5_11
  • qemu-kvm-rhev RHEL 6, openstack 5 2:0.12.1.2-2.491.el6_8.3
  • qemu-img-rhev RHEL 6, openstack 5 2:0.12.1.2-2.491.el6_8.3
  • qemu-kvm-rhev-tools RHEL 6, openstack 5 2:0.12.1.2-2.491.el6_8.3
  • qemu-kvm-rhev RHEL 7, openstack 9, openstack 8 +3 more 10:2.3.0-31.el7_2.21

red hat advisories RHSA-2016:1943RHSA-2016:1652RHSA-2016:1763RHSA-2016:1653RHSA-2016:1756RHSA-2016:1654

  • xen SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3, OpenStack Cloud 5 +2 more 4.2.5_21-27.1
  • kvm SLES for SAP 11 SP4, SLES 11 SP4 1.4.2-47.1
  • qemu SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 2.3.1-21.1
  • xen SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 4.4.4_07-37.1
  • xen SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 4.5.3_08-17.1
  • qemu SLES for SAP 12, SLES 12-LTSS 2.0.2-48.22.1
  • xen SLES for SAP 12, SLES 12-LTSS 4.4.4_04-22.22.2

suse advisories SUSE-SU-2016:2781-1SUSE-SU-2016:2725-1SUSE-SU-2016:2628-1SUSE-SU-2016:2589-1SUSE-SU-2016:2533-1SUSE-SU-2016:2100-1

  • qemu openSUSE Tumbleweed 2.6.1-1.5

opensuse advisories openSUSE-SU-2024:10233-1

  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +17 more 4.7.0-r0
  • xen Alpine 3.4 4.6.3-r1

alpine advisories ALPINE-CVE-2016-5403

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2016-5403 updated cvss 3.4

Qemu: virtio: unbounded memory allocation on host via guest leading to DoS

  • Red Hat Enterprise Linux 5 kvm, xen
    affected: no fix available, 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 1.5.3-105.el7_2.7, qemu-kvm 1.5.3-105.el7_2.7, libcacard 1.5.3-105.el7_2.7, qemu-kvm-tools 1.5.3-105.el7_2.7, qemu-kvm-common 1.5.3-105.el7_2.7 Red Hat Enterprise Linux Client Optional (v. 7) libcacard-tools 1.5.3-105.el7_2.7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) qemu-img 1.5.3-105.el7_2.7, qemu-kvm 1.5.3-105.el7_2.7, libcacard 1.5.3-105.el7_2.7, qemu-kvm-tools 1.5.3-105.el7_2.7, libcacard-tools 1.5.3-105.el7_2.7, qemu-kvm-common 1.5.3-105.el7_2.7
    fixed: vendor fix RHSA-2016:1606
  • Red Hat Enterprise Linux Desktop (v. 6) qemu-img 0.12.1.2-2.491.el6_8.3, qemu-kvm 0.12.1.2-2.491.el6_8.3, qemu-kvm-tools 0.12.1.2-2.491.el6_8.3, qemu-guest-agent 0.12.1.2-2.491.el6_8.3
    fixed: vendor fix RHSA-2016:1585
  • Red Hat Enterprise Linux Desktop Multi OS (v. 5 client) kvm 83-276.el5_11, kmod-kvm 83-276.el5_11, kvm-tools 83-276.el5_11, kvm-qemu-img 83-276.el5_11
    fixed: vendor fix RHSA-2016:1943
  • Red Hat Enterprise Linux HPC Node (v. 6) qemu-img 0.12.1.2-2.491.el6_8.3, qemu-kvm 0.12.1.2-2.491.el6_8.3, qemu-kvm-tools 0.12.1.2-2.491.el6_8.3, qemu-guest-agent 0.12.1.2-2.491.el6_8.3
    fixed: vendor fix RHSA-2016:1585
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 qemu-img-rhev 0.12.1.2-2.491.el6_8.3, qemu-kvm-rhev 0.12.1.2-2.491.el6_8.3, qemu-kvm-rhev-tools 0.12.1.2-2.491.el6_8.3
    fixed: vendor fix RHSA-2016:1652
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 qemu-img-rhev 2.3.0-31.el7_2.21, qemu-kvm-rhev 2.3.0-31.el7_2.21, libcacard-rhev 2.3.0-31.el7_2.21, qemu-kvm-tools-rhev 2.3.0-31.el7_2.21, libcacard-devel-rhev 2.3.0-31.el7_2.21, libcacard-tools-rhev 2.3.0-31.el7_2.21, +1 more
    fixed: vendor fix RHSA-2016:1655
show 12 more
  • Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 qemu-img-rhev 2.3.0-31.el7_2.21, qemu-kvm-rhev 2.3.0-31.el7_2.21, libcacard-rhev 2.3.0-31.el7_2.21, qemu-kvm-tools-rhev 2.3.0-31.el7_2.21, libcacard-devel-rhev 2.3.0-31.el7_2.21, libcacard-tools-rhev 2.3.0-31.el7_2.21, +1 more
    fixed: vendor fix RHSA-2016:1654
  • Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 qemu-img-rhev 2.3.0-31.el7_2.21, qemu-kvm-rhev 2.3.0-31.el7_2.21, libcacard-rhev 2.3.0-31.el7_2.21, qemu-kvm-tools-rhev 2.3.0-31.el7_2.21, libcacard-tools-rhev 2.3.0-31.el7_2.21, qemu-kvm-common-rhev 2.3.0-31.el7_2.21
    fixed: vendor fix RHSA-2016:1653
  • Red Hat Enterprise Linux Server (v. 6) qemu-img 0.12.1.2-2.491.el6_8.3, qemu-kvm 0.12.1.2-2.491.el6_8.3, qemu-kvm-tools 0.12.1.2-2.491.el6_8.3, qemu-guest-agent 0.12.1.2-2.491.el6_8.3
    fixed: vendor fix RHSA-2016:1585
  • Red Hat Enterprise Linux Server (v. 7) qemu-img 1.5.3-105.el7_2.7, qemu-kvm 1.5.3-105.el7_2.7, libcacard 1.5.3-105.el7_2.7, qemu-kvm-tools 1.5.3-105.el7_2.7, qemu-kvm-common 1.5.3-105.el7_2.7 Red Hat Enterprise Linux Server Optional (v. 7) libcacard 1.5.3-105.el7_2.7, libcacard-tools 1.5.3-105.el7_2.7
    fixed: vendor fix RHSA-2016:1606
  • Red Hat Enterprise Linux Virtualization (v. 5 server) kvm 83-276.el5_11, kmod-kvm 83-276.el5_11, kvm-tools 83-276.el5_11, kvm-qemu-img 83-276.el5_11
    fixed: vendor fix RHSA-2016:1943
  • Red Hat Enterprise Linux Workstation (v. 6) qemu-img 0.12.1.2-2.491.el6_8.3, qemu-kvm 0.12.1.2-2.491.el6_8.3, qemu-kvm-tools 0.12.1.2-2.491.el6_8.3, qemu-guest-agent 0.12.1.2-2.491.el6_8.3
    fixed: vendor fix RHSA-2016:1585
  • Red Hat Enterprise Linux Workstation (v. 7) qemu-img 1.5.3-105.el7_2.7, qemu-kvm 1.5.3-105.el7_2.7, libcacard 1.5.3-105.el7_2.7, qemu-kvm-tools 1.5.3-105.el7_2.7, qemu-kvm-common 1.5.3-105.el7_2.7 Red Hat Enterprise Linux Workstation Optional (v. 7) libcacard-tools 1.5.3-105.el7_2.7
    fixed: vendor fix RHSA-2016:1606
  • Red Hat OpenStack Platform 8.0 (Liberty) qemu-img-rhev 2.3.0-31.el7_2.21, qemu-kvm-rhev 2.3.0-31.el7_2.21, libcacard-rhev 2.3.0-31.el7_2.21, qemu-kvm-tools-rhev 2.3.0-31.el7_2.21, libcacard-tools-rhev 2.3.0-31.el7_2.21, qemu-kvm-common-rhev 2.3.0-31.el7_2.21
    fixed: vendor fix RHSA-2016:1756
  • Red Hat OpenStack Platform 9.0 qemu-img-rhev 2.3.0-31.el7_2.21, qemu-kvm-rhev 2.3.0-31.el7_2.21, libcacard-rhev 2.3.0-31.el7_2.21, qemu-kvm-tools-rhev 2.3.0-31.el7_2.21, libcacard-tools-rhev 2.3.0-31.el7_2.21, qemu-kvm-common-rhev 2.3.0-31.el7_2.21
    fixed: vendor fix RHSA-2016:1763
  • Red Hat RHEV Agents (vdsm) qemu-img-rhev 0.12.1.2-2.491.el6_8.3, qemu-kvm-rhev 0.12.1.2-2.491.el6_8.3, qemu-kvm-rhev-tools 0.12.1.2-2.491.el6_8.3
    fixed: vendor fix RHSA-2016:1586
  • Red Hat RHEV-H and VDSM for 7 Hosts qemu-img-rhev 2.3.0-31.el7_2.21, qemu-kvm-rhev 2.3.0-31.el7_2.21, libcacard-rhev 2.3.0-31.el7_2.21, qemu-kvm-tools-rhev 2.3.0-31.el7_2.21, libcacard-devel-rhev 2.3.0-31.el7_2.21, libcacard-tools-rhev 2.3.0-31.el7_2.21, +1 more
    fixed: vendor fix RHSA-2016:1607
  • Red Hat OpenStack Platform 10 (Newton) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-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

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

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.