Xen: qemu ioport out-of-bounds array access (XSA-199)
Published Feb 16, 2017
7.6
HIGHCVSS 3.0
EPSS 0.36%
Description
The (1) ioport_read and (2) ioport_write functions in Xen, when qemu is used as a device model within Xen, might allow local x86 HVM guest OS administrators to gain qemu process privileges via vectors involving an out-of-range ioport access.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
xen-0:3.0.3-148.el5_11
Fixed · RHSA-2016:2963
Red Hat Enterprise Linux 5
kvm
Not affected
Red Hat Enterprise Linux 6
qemu-kvm
Not affected
Red Hat Enterprise Linux 7
qemu-kvm
Not affected
Red Hat Enterprise Linux 7
qemu-kvm-rhev
Not affected
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
qemu-kvm-rhev
Not affected
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
qemu-kvm-rhev
Not affected
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
qemu-kvm-rhev
Not affected
Red Hat OpenStack Platform 8 (Liberty)
qemu-kvm-rhev
Not affected
Red Hat OpenStack Platform 9 (Mitaka)
qemu-kvm-rhev
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen-0:3.0.3-148.el5_11 | Fixed | RHSA-2016:2963 |
| Red Hat Enterprise Linux 5 | kvm | Not affected | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm | Not affected | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | qemu-kvm-rhev | Not affected | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | 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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
AV:L/AC:H/Au:N/C:P/I:P/A:P
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.36% (0.00364) | 27.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00364) | 28.07th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00087) | 22.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (11)
- http://rhn.redhat.com/errata/RHSA-2016-2963.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/94699 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1037397 vdb-entryx_refsource_SECTRACK
- http://xenbits.xen.org/xsa/advisory-199.html x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2016-9637 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1397043 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2016-9637
- https://security.gentoo.org/glsa/201612-56 vendor-advisoryx_refsource_GENTOO
- https://support.citrix.com/article/CTX219136 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2016-9637
| Link | Providers | Tags |
|---|---|---|
| http://rhn.redhat.com/errata/RHSA-2016-2963.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.securityfocus.com/bid/94699 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1037397 | vdb-entryx_refsource_SECTRACK | |
| http://xenbits.xen.org/xsa/advisory-199.html | x_refsource_CONFIRM | |
| https://access.redhat.com/security/cve/CVE-2016-9637 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1397043 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-9637 | ||
| https://security.gentoo.org/glsa/201612-56 | vendor-advisoryx_refsource_GENTOO | |
| https://support.citrix.com/article/CTX219136 | x_refsource_CONFIRM | |
| https://www.cve.org/CVERecord?id=CVE-2016-9637 |
Change history (0)
No recorded changes yet.