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Fencer Intel
medium 5.5

CVE-2018-15746 json

qemu-seccomp.c in QEMU might allow local OS guest users to cause a denial of service (guest crash) by leveraging mishandling of the seccomp…

published 8y ago modified 4mo ago also EUVD-2018-7615

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

qemu-seccomp.c in QEMU might allow local OS guest users to cause a denial of service (guest crash) by leveraging mishandling of the seccomp policy for threads other than the main thread.

Patch / fix

  • qemu Debian 14, Debian 13, Debian 12 1:3.1+dfsg-1

debian advisories DEBIAN-CVE-2018-15746

  • qemu Ubuntu 18.04 LTS 1:2.11+dfsg-1ubuntu7.6

ubuntu advisories UBUNTU-CVE-2018-15746

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • qemu-kvm-rhev openstack 14, openstack 13, openstack 10 10:2.12.0-33.el7
  • qemu-img-rhev openstack 14, openstack 13, openstack 10 10:2.12.0-33.el7
  • qemu-kvm-tools-rhev openstack 14, openstack 13, openstack 10 10:2.12.0-33.el7
  • qemu-kvm-common-rhev openstack 14, openstack 13, openstack 10 10:2.12.0-33.el7
  • qemu-kvm-ma RHEL 7 10:2.12.0-48.el7
  • qemu-img-ma RHEL 7 10:2.12.0-48.el7
  • qemu-kvm-tools-ma RHEL 7 10:2.12.0-48.el7
  • qemu-kvm-common-ma RHEL 7 10:2.12.0-48.el7

red hat advisories RHSA-2019:2425RHSA-2020:3907RHSA-2020:3906RHSA-2020:3267

  • qemu SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 2.6.2-41.46.2
  • qemu SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 2.11.2-5.5.1
  • qemu SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 2.9.1-6.22.3
  • kvm SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 1.4.2-53.26.2
  • kvm SLES for SAP 11 SP4, SLES 11 SP4 1.4.2-60.18.2
  • qemu SLE Module for Server Applications 15, SLE Module for Basesystem 15 2.11.2-9.12.2
  • qemu SLES for SAP 12 SP1, SLES 12 SP1-LTSS 2.3.1-33.17.1
  • qemu SLES 12-LTSS 2.0.2-48.46.2

suse advisories SUSE-SU-2018:3973-2SUSE-SU-2018:4237-1SUSE-SU-2018:4185-1SUSE-SU-2018:4129-1SUSE-SU-2018:3987-1SUSE-SU-2018:3975-1

  • qemu openSUSE Tumbleweed 6.1.0-32.1

opensuse advisories openSUSE-SU-2024:11287-1

Is CVE-2018-15746 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2018-15746 updated cvss 5.3

QEMU: seccomp: blacklist is not applied to all threads

  • Red Hat OpenStack Platform 8 (Liberty) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more Red Hat OpenStack Platform 9 (Mitaka) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more
    affected: no fix available “Fix deferred”
  • Red Hat OpenStack Platform 12 (Pike) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) qemu-img 1.5.3-175.el7, qemu-kvm 1.5.3-175.el7, qemu-kvm-tools 1.5.3-175.el7, qemu-kvm-common 1.5.3-175.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) qemu-img 1.5.3-175.el7, qemu-kvm 1.5.3-175.el7, qemu-kvm-tools 1.5.3-175.el7, qemu-kvm-common 1.5.3-175.el7 Red Hat Enterprise Linux Server (v. 7) qemu-img 1.5.3-175.el7, qemu-kvm 1.5.3-175.el7, qemu-img-ma 2.12.0-48.el7, qemu-kvm-ma 2.12.0-48.el7, qemu-kvm-tools 1.5.3-175.el7, qemu-kvm-common 1.5.3-175.el7, +2 more
    fixed: vendor fix RHSA-2020:3906
  • Red Hat Enterprise Linux Server Optional (v. 7) qemu-kvm-ma 2.12.0-48.el7, qemu-kvm-tools-ma 2.12.0-48.el7, qemu-kvm-common-ma 2.12.0-48.el7
    fixed: vendor fix RHSA-2020:3907
  • Red Hat Enterprise Linux Workstation (v. 7) qemu-img 1.5.3-175.el7, qemu-kvm 1.5.3-175.el7, qemu-kvm-tools 1.5.3-175.el7, qemu-kvm-common 1.5.3-175.el7
    fixed: vendor fix RHSA-2020:3906
  • Red Hat OpenStack Platform 10.0 qemu-img-rhev 2.12.0-33.el7, qemu-kvm-rhev 2.12.0-33.el7, qemu-kvm-tools-rhev 2.12.0-33.el7, qemu-kvm-common-rhev 2.12.0-33.el7 Red Hat OpenStack Platform 13.0 qemu-img-rhev 2.12.0-33.el7, qemu-kvm-rhev 2.12.0-33.el7, qemu-kvm-tools-rhev 2.12.0-33.el7, qemu-kvm-common-rhev 2.12.0-33.el7 Red Hat OpenStack Platform 14.0 qemu-img-rhev 2.12.0-33.el7, qemu-kvm-rhev 2.12.0-33.el7, qemu-kvm-tools-rhev 2.12.0-33.el7, qemu-kvm-common-rhev 2.12.0-33.el7
    fixed: vendor fix RHSA-2019:2425
  • Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts qemu-img-rhev 2.12.0-48.el7, qemu-kvm-rhev 2.12.0-48.el7, qemu-kvm-tools-rhev 2.12.0-48.el7, qemu-kvm-common-rhev 2.12.0-48.el7 Red Hat RHV-M 4.3 qemu-img-rhev 2.12.0-48.el7, qemu-kvm-rhev 2.12.0-48.el7, qemu-kvm-tools-rhev 2.12.0-48.el7, qemu-kvm-common-rhev 2.12.0-48.el7
    fixed: vendor fix RHSA-2020:3267
  • Red Hat Enterprise Linux 5 kvm Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 8 qemu-img, qemu-kvm, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, qemu-guest-agent, +8 more
    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

0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Intel 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.