kernel: qemu buffer overflow in virtio-serial
Published Jan 23, 2020
6.5
MEDIUMCVSS 3.1
EPSS 3.01%
Description
Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.
Affected products
-
- Version before 2.4.0StatusaffectedConstraints-
- Version
No data.
Red Hat Enterprise Linux 5
kvm
Not affected
Red Hat Enterprise Linux 6
qemu-kvm
Will not fix
Red Hat Enterprise Linux 7
qemu-guest-agent
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 OpenStack Platform 4
qemu-kvm-rhev
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kvm | Not affected | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | qemu-guest-agent | 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 OpenStack Platform 4 | qemu-kvm-rhev | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of kvm and xen packages as shipped with Red Hat Enterprise Linux 5. This issue affects the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6 and 7. This issue affects the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. This issue affects the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3. 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:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/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 | 3.01% (0.03012) | 86.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.01% (0.03012) | 85.63th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.03% (0.01026) | 75.75th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.19% (0.00188) | 57.61th | v3 (v2023.03.01) |
| May 8, 2023 | 0.19% (0.00188) | 54.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.23% (0.00234) | 59.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.10% (0.01104) | 52.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.10% (0.01104) | 50.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
References (12)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168077.html x_refsource_MISCMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168646.html x_refsource_MISCMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168671.html x_refsource_MISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2015/08/06/3 x_refsource_MISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2015/08/06/5 x_refsource_MISCExploitMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2015-5745 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1251157 Issue Tracking
- https://github.com/qemu/qemu/commit/7882080388be5088e72c425b02223c02e6cb4295 x_refsource_MISCPatchThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2015-07/msg05458.html x_refsource_MISCMailing ListPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-5745
- https://www.arista.com/en/support/advisories-notices/security-advisories/1180-security-advisory-13 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-5745
Change history (0)
No recorded changes yet.