Qemu: block: iscsi: buffer overflow in iscsi_aio_ioctl
Published Jun 1, 2016
7.8
HIGHCVSS 3.1
EPSS 0.70%
Description
Heap-based buffer overflow in the iscsi_aio_ioctl function in block/iscsi.c in QEMU allows local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call.
Affected products
No data.
Configuration 2
- 12.04
- 14.04
- 16.04
Configuration 4
- 8.0
Configuration 5
- 6.0
- 7.0
- 8
- 9
- 7.0
- 7.2
- 7.3
- 7.4
- 7.5
- 7.6
- 7.7
- 7.0
- 7.2
- 7.3
- 7.4
- 7.6
- 7.7
- 7.2
- 7.3
- 7.6
- 7.7
- 7.0
Configuration 6
- 5.0
- 3.0
Running on/with
- 7.0
No data.
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 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 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
Not affected
Red Hat Enterprise Linux 5
xen
Not affected
Red Hat Enterprise Linux 6
qemu-kvm
Not affected
Red Hat OpenStack Platform 10 (Newton)
qemu-kvm-rhev
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 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 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 | Not affected | n/a |
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm | Not 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:H/I:H/A:H
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L
AV:L/AC:L/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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.70% (0.00701) | 51.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.71% (0.00707) | 48.37th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00144) | 32.01th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00067) | 31.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00060) | 23.39th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.92% (0.01916) | 77.44th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.92% (0.01916) | 77.43th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.92% (0.01916) | 75.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.92% (0.01916) | 54.59th | v2 (v2022.01.01) |
References (21)
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=a6b3167fa0e825aebb5a7cd8b437b6d41584a196 x_refsource_CONFIRM
- 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-2016-1653.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://www.openwall.com/lists/oss-security/2016/05/30/6 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/05/30/7 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/90948 vdb-entryx_refsource_BIDThird 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
- https://access.redhat.com/security/cve/CVE-2016-5126 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1340924 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://lists.gnu.org/archive/html/qemu-block/2016-05/msg00779.html mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-5126
- https://security.gentoo.org/glsa/201609-01 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-5126
Change history (0)
No recorded changes yet.