Qemu: ide: flushing of empty CDROM drives leads to NULL dereference
Published Aug 23, 2017
6.5
MEDIUMCVSS 3.1
EPSS 0.39%
Description
QEMU (aka Quick Emulator), when built with the IDE disk and CD/DVD-ROM Emulator support, allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive.
Affected products
No data.
No data.
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 Enterprise Linux 7
qemu-kvm
Not affected
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 10 (Newton)
qemu-kvm-rhev
Will not fix
Red Hat OpenStack Platform 11 (Ocata)
qemu-kvm-rhev
Will not fix
Red Hat OpenStack Platform 8 (Liberty)
qemu-kvm-rhev
Will not fix
Red Hat OpenStack Platform 9 (Mitaka)
qemu-kvm-rhev
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 Enterprise Linux 7 | qemu-kvm | Not affected | 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 10 (Newton) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat OpenStack Platform 11 (Ocata) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | qemu-kvm-rhev | Will not fix | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | qemu-kvm-rhev | Will not fix | 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:C/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: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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.39% (0.00386) | 30.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.39% (0.00386) | 30.18th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00090) | 23.43th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00059) | 26.93th | v3 (v2023.03.01) |
| May 25, 2024 | 0.06% (0.00059) | 24.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00059) | 22.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.29% (0.01294) | 30.79th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.29% (0.01294) | 0.00th | v1 |
References (8)
- http://www.debian.org/security/2017/dsa-3991 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2017/08/21/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/100451 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-12809 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1483534 Issue Tracking
- https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg01850.html mailing-listx_refsource_MLISTPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-12809
- https://www.cve.org/CVERecord?id=CVE-2017-12809
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2017/dsa-3991 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2017/08/21/2 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/100451 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-12809 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1483534 | Issue Tracking | |
| https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg01850.html | mailing-listx_refsource_MLISTPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-12809 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-12809 |
Change history (0)
No recorded changes yet.