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Fencer Vulns
high 7.5

CVE-2017-13711 json

Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows attackers to cause a denial of se…

published 2017-09-01 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-5228

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.8%
EPSS 3.8% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

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.

Patch / fix

  • qemu Debian 14, Debian 13, Debian 12 1:2.10.0-1

debian advisories DEBIAN-CVE-2017-13711

  • qemu-kvm-rhev RHEL 7, openstack 12, openstack 11 +3 more 10:2.10.0-21.el7
  • qemu-img-rhev RHEL 7, openstack 12, openstack 11 +3 more 10:2.10.0-21.el7
  • qemu-kvm-tools-rhev RHEL 7, openstack 12, openstack 11 +3 more 10:2.10.0-21.el7
  • qemu-kvm-common-rhev RHEL 7, openstack 12, openstack 11 +3 more 10:2.10.0-21.el7
  • qemu-kvm RHEL 7 10:1.5.3-156.el7
  • qemu-img RHEL 7 10:1.5.3-156.el7
  • qemu-kvm-tools RHEL 7 10:1.5.3-156.el7
  • qemu-kvm-common RHEL 7 10:1.5.3-156.el7

red hat advisories RHSA-2018:1113RHSA-2018:1104RHSA-2018:0816

  • qemu SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 2.9.1-6.6.3

suse advisories SUSE-SU-2017:2924-1

  • qemu openSUSE Tumbleweed 6.1.0-32.1

opensuse advisories openSUSE-SU-2024:11287-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-13711 updated cvss 3.4

QEMU: Slirp: use-after-free when sending response

  • Red Hat Enterprise Linux 5 kvm
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32
    affected: no fix available
  • Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) qemu-kvm-rhev Red Hat Enterprise Linux OpenStack Platform 6 (Juno) qemu-kvm-rhev Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) qemu-img 1.5.3-156.el7, qemu-kvm 1.5.3-156.el7, qemu-kvm-tools 1.5.3-156.el7, qemu-kvm-common 1.5.3-156.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) qemu-img 1.5.3-156.el7, qemu-kvm 1.5.3-156.el7, qemu-kvm-tools 1.5.3-156.el7, qemu-kvm-common 1.5.3-156.el7 Red Hat Enterprise Linux Server (v. 7) qemu-img 1.5.3-156.el7, qemu-kvm 1.5.3-156.el7, qemu-kvm-tools 1.5.3-156.el7, qemu-kvm-common 1.5.3-156.el7 Red Hat Enterprise Linux Workstation (v. 7) qemu-img 1.5.3-156.el7, qemu-kvm 1.5.3-156.el7, qemu-kvm-tools 1.5.3-156.el7, qemu-kvm-common 1.5.3-156.el7
    fixed: vendor fix RHSA-2018:0816
  • Red Hat OpenStack Platform 8.0 (Liberty) qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7 Red Hat OpenStack Platform 9.0 qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7 Red Hat OpenStack Platform 10.0 qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7 Red Hat OpenStack Platform 11.0 qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7 Red Hat OpenStack Platform 12.0 qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7
    fixed: vendor fix RHSA-2018:1113
  • Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7
    fixed: vendor fix RHSA-2018:1104
  • Red Hat Enterprise Linux 5 xen
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.84% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.