Qemu: nbd: oob stack write in client routine drop_sync
Published Jul 27, 2018
8.8
HIGHCVSS 3.0
EPSS 2.65%
Description
A stack buffer overflow flaw was found in the Quick Emulator (QEMU) before 2.9 built with the Network Block Device (NBD) client support. The flaw could occur while processing server's response to a 'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
Affected products
-
- Version 2.9StatusaffectedConstraints-
- Version
No data.
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
qemu-kvm-rhev-10:2.9.0-14.el7
Fixed · RHSA-2017:2392
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 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 10 (Newton)
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 Virtualization 4 for Red Hat Enterprise Linux 7 | qemu-kvm-rhev-10:2.9.0-14.el7 | Fixed | RHSA-2017:2392 |
| 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 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 10 (Newton) | 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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
AV:N/AC:L/Au:S/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
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.65% (0.02647) | 85.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.65% (0.02647) | 83.58th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.75% (0.01745) | 80.85th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.64% (0.04645) | 81.78th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.87% (0.01867) | 81.88th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.17% (0.00172) | 55.50th | v3 (v2023.03.01) |
| Dec 18, 2023 | 0.18% (0.00175) | 54.60th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.19% (0.00188) | 55.54th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00152) | 49.49th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.58% (0.02583) | 82.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.58% (0.02583) | 61.78th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.24% (0.03240) | 66.50th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.53% (0.02534) | 0.00th | v1 |
References (11)
- http://www.openwall.com/lists/oss-security/2017/02/15/2 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/96265 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2392 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-2630 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1422415 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2630 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/qemu/qemu/commit/2563c9c6b8670400c48e562034b321a7cf3d9a85 x_refsource_MISC
- https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg01246.html mailing-listx_refsource_MLISTPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-2630
- https://security.gentoo.org/glsa/201704-01 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-2630
Change history (0)
No recorded changes yet.