Qemu: usb: multiple eof_timers in ohci module leads to null pointer dereference
Published Jun 16, 2016
5.0
MEDIUMCVSS 3.1
EPSS 0.40%
Description
The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.
Affected products
No data.
Configuration 2
- 12.04
- 14.04
- 15.10
- 16.04
Configuration 3
- 8.0
No data.
Red Hat Enterprise Linux 5
kvm
Will not fix
Red Hat Enterprise Linux 5
xen
Will not fix
Red Hat Enterprise Linux 6
qemu-kvm
Will not fix
Red Hat Enterprise Linux 6
qemu-kvm-rhev
Will not fix
Red Hat Enterprise Linux 7
qemu-kvm
Will not fix
Red Hat Enterprise Linux 7
qemu-kvm-rhev
Will not fix
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
qemu-kvm-rhev
Will not fix
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
qemu-kvm-rhev
Will not fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
qemu-kvm-rhev
Will not fix
Red Hat OpenStack Platform 8 (Liberty)
qemu-kvm-rhev
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | xen | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | qemu-kvm-rhev | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/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 | 0.40% (0.00396) | 31.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00400) | 31.53th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00104) | 26.02th | 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 (10)
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fa1298c2d623522eda7b4f1f721fcb935abb7360 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2016/02/16/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/83263 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2974-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-2391 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1304794 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg03374.html mailing-listx_refsource_MLISTPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-2391
- https://www.cve.org/CVERecord?id=CVE-2016-2391
| Link | Providers | Tags |
|---|---|---|
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fa1298c2d623522eda7b4f1f721fcb935abb7360 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2016/02/16/2 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/83263 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.ubuntu.com/usn/USN-2974-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2016-2391 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1304794 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg03374.html | mailing-listx_refsource_MLISTPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-2391 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-2391 |
Change history (0)
No recorded changes yet.