QEMU: Slirp: use-after-free when sending response
Published Sep 1, 2017
7.5
HIGHCVSS 3.1
EPSS 3.84%
Description
Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets.
Affected products
No data.
Configuration 2
- 9.0
No data.
Red Hat Enterprise Linux 7
qemu-kvm-10:1.5.3-156.el7
Fixed · RHSA-2018:0816
Red Hat OpenStack Platform 10.0 (Newton)
qemu-kvm-rhev-10:2.10.0-21.el7
Fixed · RHSA-2018:1113
Red Hat OpenStack Platform 11.0 (Ocata)
qemu-kvm-rhev-10:2.10.0-21.el7
Fixed · RHSA-2018:1113
Red Hat OpenStack Platform 12.0 (Pike)
qemu-kvm-rhev-10:2.10.0-21.el7
Fixed · RHSA-2018:1113
Red Hat OpenStack Platform 8.0 (Liberty)
qemu-kvm-rhev-10:2.10.0-21.el7
Fixed · RHSA-2018:1113
Red Hat OpenStack Platform 9.0 (Mitaka)
qemu-kvm-rhev-10:2.10.0-21.el7
Fixed · RHSA-2018:1113
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
qemu-kvm-rhev-10:2.10.0-21.el7
Fixed · RHSA-2018:1104
Red Hat Enterprise Linux 5
kvm
Will not fix
Red Hat Enterprise Linux 5
xen
Not affected
Red Hat Enterprise Linux 6
qemu-kvm
Affected
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
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | qemu-kvm-10:1.5.3-156.el7 | Fixed | RHSA-2018:0816 |
| Red Hat OpenStack Platform 10.0 (Newton) | qemu-kvm-rhev-10:2.10.0-21.el7 | Fixed | RHSA-2018:1113 |
| Red Hat OpenStack Platform 11.0 (Ocata) | qemu-kvm-rhev-10:2.10.0-21.el7 | Fixed | RHSA-2018:1113 |
| Red Hat OpenStack Platform 12.0 (Pike) | qemu-kvm-rhev-10:2.10.0-21.el7 | Fixed | RHSA-2018:1113 |
| Red Hat OpenStack Platform 8.0 (Liberty) | qemu-kvm-rhev-10:2.10.0-21.el7 | Fixed | RHSA-2018:1113 |
| Red Hat OpenStack Platform 9.0 (Mitaka) | qemu-kvm-rhev-10:2.10.0-21.el7 | Fixed | RHSA-2018:1113 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | qemu-kvm-rhev-10:2.10.0-21.el7 | Fixed | RHSA-2018:1104 |
| Red Hat Enterprise Linux 5 | kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
| Red Hat Enterprise Linux 6 | qemu-kvm | Affected | 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 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
AV:N/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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.84% (0.03841) | 89.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.84% (0.03841) | 88.72th | v5 (v2026.06.15) |
| Apr 17, 2026 | 1.75% (0.01754) | 82.62th | v4 (v2025.03.14) |
| Dec 9, 2025 | 3.04% (0.03036) | 86.20th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.39% (0.01390) | 79.05th | v4 (v2025.03.14) |
| Dec 17, 2024 | 1.11% (0.01110) | 84.26th | v3 (v2023.03.01) |
| Jun 22, 2024 | 1.56% (0.01558) | 87.27th | v3 (v2023.03.01) |
| May 21, 2024 | 1.51% (0.01512) | 86.97th | v3 (v2023.03.01) |
| May 8, 2023 | 1.51% (0.01512) | 84.97th | v3 (v2023.03.01) |
| Apr 21, 2023 | 1.89% (0.01886) | 86.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.74% (0.01738) | 85.93th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.18% (0.01183) | 61.76th | v2 (v2022.01.01) |
| Oct 19, 2022 | 1.18% (0.01183) | 60.79th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.18% (0.01183) | 58.77th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.18% (0.01183) | 35.15th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.31% (0.02314) | 53.75th | v1 |
| Jan 6, 2022 | 2.31% (0.02314) | 53.29th | v1 |
| Sep 1, 2021 | 2.31% (0.02314) | 78.25th | v1 |
| Apr 14, 2021 | 2.31% (0.02314) | 0.00th | v1 |
References (11)
- http://www.debian.org/security/2017/dsa-3991 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2017/08/29/6 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/100534 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:0816 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1104 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1113 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-13711 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1486400 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg05201.html mailing-listx_refsource_MLISTPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-13711
- https://www.cve.org/CVERecord?id=CVE-2017-13711
Change history (0)
No recorded changes yet.