Qemu: virtio: unbounded memory allocation on host via guest leading to DoS
Published Aug 2, 2016
5.5
MEDIUMCVSS 3.1
EPSS 0.52%
Description
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.
Affected products
No data.
Configuration 1
- 12.04
- 14.04
- 16.04
Configuration 2
Configuration 4
- 8.0
Configuration 5
- 5.0
- 6.0
- 7.0
- 8
- 9
- 3.0
- 6.0
- 7.0
- 6.0
- 7.0
- 7.2
- 7.3
- 7.4
- 7.5
- 7.6
- 7.7
- 7.2
- 7.3
- 7.4
- 7.5
- 7.6
- 7.7
- 7.2
- 7.3
- 7.6
- 7.7
- 6.0
- 7.0
No data.
RHEV 3.X Hypervisor and Agents for RHEL-6
qemu-kvm-rhev-2:0.12.1.2-2.491.el6_8.3
Fixed · RHSA-2016:1586
RHEV 3.X Hypervisor and Agents for RHEL-7
qemu-kvm-rhev-10:2.3.0-31.el7_2.21
Fixed · RHSA-2016:1607
Red Hat Enterprise Linux 5
kvm-0:83-276.el5_11
Fixed · RHSA-2016:1943
Red Hat Enterprise Linux 6
qemu-kvm-2:0.12.1.2-2.491.el6_8.3
Fixed · RHSA-2016:1585
Red Hat Enterprise Linux 7
qemu-kvm-10:1.5.3-105.el7_2.7
Fixed · RHSA-2016:1606
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6
qemu-kvm-rhev-2:0.12.1.2-2.491.el6_8.3
Fixed · RHSA-2016:1652
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7
qemu-kvm-rhev-10:2.3.0-31.el7_2.21
Fixed · RHSA-2016:1655
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7
qemu-kvm-rhev-10:2.3.0-31.el7_2.21
Fixed · RHSA-2016:1654
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7
qemu-kvm-rhev-10:2.3.0-31.el7_2.21
Fixed · RHSA-2016:1653
Red Hat OpenStack Platform 8.0 (Liberty)
qemu-kvm-rhev-10:2.3.0-31.el7_2.21
Fixed · RHSA-2016:1756
Red Hat OpenStack Platform 9.0 (Mitaka)
qemu-kvm-rhev-10:2.3.0-31.el7_2.21
Fixed · RHSA-2016:1763
Red Hat Enterprise Linux 5
kvm
Affected
Red Hat Enterprise Linux 5
xen
Will not fix
Red Hat Enterprise Linux 6
qemu-kvm-rhev
Affected
Red Hat OpenStack Platform 10 (Newton)
qemu-kvm-rhev
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| RHEV 3.X Hypervisor and Agents for RHEL-6 | qemu-kvm-rhev-2:0.12.1.2-2.491.el6_8.3 | Fixed | RHSA-2016:1586 |
| RHEV 3.X Hypervisor and Agents for RHEL-7 | qemu-kvm-rhev-10:2.3.0-31.el7_2.21 | Fixed | RHSA-2016:1607 |
| Red Hat Enterprise Linux 5 | kvm-0:83-276.el5_11 | Fixed | RHSA-2016:1943 |
| Red Hat Enterprise Linux 6 | qemu-kvm-2:0.12.1.2-2.491.el6_8.3 | Fixed | RHSA-2016:1585 |
| Red Hat Enterprise Linux 7 | qemu-kvm-10:1.5.3-105.el7_2.7 | Fixed | RHSA-2016:1606 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 | qemu-kvm-rhev-2:0.12.1.2-2.491.el6_8.3 | Fixed | RHSA-2016:1652 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 | qemu-kvm-rhev-10:2.3.0-31.el7_2.21 | Fixed | RHSA-2016:1655 |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | qemu-kvm-rhev-10:2.3.0-31.el7_2.21 | Fixed | RHSA-2016:1654 |
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | qemu-kvm-rhev-10:2.3.0-31.el7_2.21 | Fixed | RHSA-2016:1653 |
| Red Hat OpenStack Platform 8.0 (Liberty) | qemu-kvm-rhev-10:2.3.0-31.el7_2.21 | Fixed | RHSA-2016:1756 |
| Red Hat OpenStack Platform 9.0 (Mitaka) | qemu-kvm-rhev-10:2.3.0-31.el7_2.21 | Fixed | RHSA-2016:1763 |
| Red Hat Enterprise Linux 5 | kvm | Affected | n/a |
| Red Hat Enterprise Linux 5 | xen | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm-rhev | Affected | n/a |
| Red Hat OpenStack Platform 10 (Newton) | qemu-kvm-rhev | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.52% (0.00520) | 42.02th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.52% (0.00524) | 40.04th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00085) | 22.31th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00064) | 29.85th | v3 (v2023.03.01) |
| May 25, 2024 | 0.06% (0.00055) | 22.60th | v3 (v2023.03.01) |
| Mar 20, 2024 | 0.07% (0.00069) | 28.28th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00059) | 22.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
References (24)
- http://rhn.redhat.com/errata/RHSA-2016-1585.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1586.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1606.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1607.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1652.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1653.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1654.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1655.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1756.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1763.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1943.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html x_refsource_CONFIRMThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html x_refsource_CONFIRMThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/92148 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1036476 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-3047-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-3047-2 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-184.html x_refsource_CONFIRMPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-5403 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1358359 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-5403
- https://www.cve.org/CVERecord?id=CVE-2016-5403
Change history (0)
No recorded changes yet.