Qemu: PRDT overflow from guest to host
Published Apr 21, 2015
4.9
MEDIUMCVSS 2.0
EPSS 0.41%
Description
The (1) BMDMA and (2) AHCI HBA interfaces in the IDE functionality in QEMU 1.0 through 2.1.3 have multiple interpretations of a function's return value, which allows guest OS users to cause a host OS denial of service (memory consumption or infinite loop, and system crash) via a PRDT with zero complete sectors, related to the bmdma_prepare_buf and ahci_dma_prepare_buf functions.
Affected products
No data.
Configuration 1
- 8.0
Configuration 2
- 1.0
- 1.0
- 1.0
- 1.0
- 1.0
- 1.0.1
- 1.1
- 1.1
- 1.1
- 1.1
- 1.1
- 1.4.1
- 1.4.2
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.1
- 1.5.2
- 1.5.3
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.1
- 1.6.2
- 1.7.1
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.2
- 2.1.0
- 2.1.0
- 2.1.0
- 2.1.0
- 2.1.0
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
No data.
Red Hat Enterprise Linux 5
kvm
Not affected
Red Hat Enterprise Linux 6
qemu-kvm
Not affected
Red Hat Enterprise Linux 7
qemu-kvm
Affected
Red Hat Enterprise Linux 7
qemu-kvm-rhev
Affected
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
qemu-kvm-rhev
Affected
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
qemu-kvm-rhev
Affected
Red Hat OpenStack Platform 4
qemu-kvm-rhev
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 | Affected | n/a |
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | qemu-kvm-rhev | Affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | qemu-kvm-rhev | Affected | n/a |
| Red Hat OpenStack Platform 4 | qemu-kvm-rhev | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of the kvm package as shipped with Red Hat Enterprise Linux 5 and the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6. This issue affects the version of the qemu-kvm package as shipped with Red Hat Enterprise Linux 7, a future update may address this flaw.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.41% (0.00407) | 32.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.41% (0.00407) | 32.18th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.20% (0.00197) | 39.65th | 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) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (8)
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=3251bdcf1c67427d964517053c3d185b46e618e8 x_refsource_CONFIRM
- http://openwall.com/lists/oss-security/2015/04/20/7 mailing-listx_refsource_MLIST
- http://www.debian.org/security/2015/dsa-3259 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/73316 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2014-9718 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1204919 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-9718
- https://www.cve.org/CVERecord?id=CVE-2014-9718
| Link | Providers | Tags |
|---|---|---|
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=3251bdcf1c67427d964517053c3d185b46e618e8 | x_refsource_CONFIRM | |
| http://openwall.com/lists/oss-security/2015/04/20/7 | mailing-listx_refsource_MLIST | |
| http://www.debian.org/security/2015/dsa-3259 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/73316 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2014-9718 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1204919 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-9718 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-9718 |
Change history (0)
No recorded changes yet.