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TI-2018-08460 Aliases CVE-2018-11806GHSA-2vg8-mhwg-wq3f

m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.

Priority LOW 37CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 17 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.

Why it matters now

EPSS 0.00807 57th percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 17 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 27

CPEVersionsRoleVendor
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*up to 2.12.1VulnerableQEMU
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*8VulnerableRed Hat
cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*9VulnerableRed Hat
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*10VulnerableRed Hat
cpe:2.3:a:redhat:openstack:12:*:*:*:*:*:*:*12VulnerableRed Hat
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*13VulnerableRed Hat
  • cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions up to 2.12.1 Vulnerable ·QEMU
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
  • cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:* Versions 8 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:* Versions 9 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* Versions 10 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:12:*:*:*:*:*:*:* Versions 12 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* Versions 13 Vulnerable ·Red Hat
Show 17 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:*7.5VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*7.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*7.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*7.7VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0Running onRed Hat
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:* Versions 7.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:* Versions 7.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:* Versions 7.7 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Running on ·Red Hat
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

Red Hat 5 advisories

  • RHSA-2019:2892 Released 2019-09-24 · Red Hat rating Important
    qemu-kvm security update
    • Red Hat Enterprise Linux Desktop (v. 6) qemu-guest-agent-2:0.12.1.2-2.506.el6_10.5, qemu-img-2:0.12.1.2-2.506.el6_10.5, qemu-kvm-2:0.12.1.2-2.506.el6_10.5 +1
    • Red Hat Enterprise Linux HPC Node (v. 6) qemu-guest-agent-2:0.12.1.2-2.506.el6_10.5, qemu-img-2:0.12.1.2-2.506.el6_10.5, qemu-kvm-2:0.12.1.2-2.506.el6_10.5 +1
    • Red Hat Enterprise Linux Server (v. 6) qemu-guest-agent-2:0.12.1.2-2.506.el6_10.5, qemu-img-2:0.12.1.2-2.506.el6_10.5, qemu-kvm-2:0.12.1.2-2.506.el6_10.5 +1
    • Red Hat Enterprise Linux Workstation (v. 6) qemu-guest-agent-2:0.12.1.2-2.506.el6_10.5, qemu-img-2:0.12.1.2-2.506.el6_10.5, qemu-kvm-2:0.12.1.2-2.506.el6_10.5 +1
  • RHSA-2018:2887 Released 2018-10-09 · Red Hat rating Important
    qemu-kvm-rhev security update
    • Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts qemu-img-rhev-10:2.10.0-21.el7_5.7, qemu-kvm-common-rhev-10:2.10.0-21.el7_5.7, qemu-kvm-rhev-10:2.10.0-21.el7_5.7 +1
  • RHSA-2018:2822 Released 2018-09-27 · Red Hat rating Important
    qemu-kvm-rhev security update
    • Red Hat OpenStack Platform 10.0 qemu-img-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-common-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-rhev-10:2.10.0-21.el7_5.6 +1
    • Red Hat OpenStack Platform 12.0 qemu-img-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-common-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-rhev-10:2.10.0-21.el7_5.6 +1
    • Red Hat OpenStack Platform 13.0 qemu-img-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-common-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-rhev-10:2.10.0-21.el7_5.6 +1
    • Red Hat OpenStack Platform 8.0 (Liberty) qemu-img-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-common-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-rhev-10:2.10.0-21.el7_5.6 +1
    • Red Hat OpenStack Platform 9.0 qemu-img-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-common-rhev-10:2.10.0-21.el7_5.6, qemu-kvm-rhev-10:2.10.0-21.el7_5.6 +1
Show 2 more Red Hat advisories
  • RHSA-2018:2762 Released 2018-09-25 · Red Hat rating Important
    qemu-kvm-ma security update
    • Red Hat Enterprise Linux Server (v. 7) qemu-img-ma-10:2.10.0-21.el7_5.4, qemu-kvm-common-ma-10:2.10.0-21.el7_5.4, qemu-kvm-ma-10:2.10.0-21.el7_5.4 +1
    • Red Hat Enterprise Linux Server Optional (v. 7) qemu-kvm-common-ma-10:2.10.0-21.el7_5.4, qemu-kvm-ma-10:2.10.0-21.el7_5.4, qemu-kvm-tools-ma-10:2.10.0-21.el7_5.4
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) qemu-img-ma-10:2.10.0-21.el7_5.4, qemu-kvm-common-ma-10:2.10.0-21.el7_5.4, qemu-kvm-ma-10:2.10.0-21.el7_5.4 +1
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) qemu-img-ma-10:2.10.0-21.el7_5.4, qemu-kvm-common-ma-10:2.10.0-21.el7_5.4, qemu-kvm-ma-10:2.10.0-21.el7_5.4 +1
  • RHSA-2018:2462 Released 2018-08-16 · Red Hat rating Important
    qemu-kvm security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) qemu-img-10:1.5.3-156.el7_5.5, qemu-kvm-10:1.5.3-156.el7_5.5, qemu-kvm-common-10:1.5.3-156.el7_5.5 +1
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) qemu-img-10:1.5.3-156.el7_5.5, qemu-kvm-10:1.5.3-156.el7_5.5, qemu-kvm-common-10:1.5.3-156.el7_5.5 +1
    • Red Hat Enterprise Linux Server (v. 7) qemu-img-10:1.5.3-156.el7_5.5, qemu-kvm-10:1.5.3-156.el7_5.5, qemu-kvm-common-10:1.5.3-156.el7_5.5 +1
    • Red Hat Enterprise Linux Workstation (v. 7) qemu-img-10:1.5.3-156.el7_5.5, qemu-kvm-10:1.5.3-156.el7_5.5, qemu-kvm-common-10:1.5.3-156.el7_5.5 +1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:2462
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:2462
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2019:2892
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2019:2892
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:2892
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:2462, RHSA-2018:2762
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:2762
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2019:2892
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:2462
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:2762
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:2762
Red Hat OpenStack Platform 10.0Fixed RHSA-2018:2822
Red Hat OpenStack Platform 12.0Fixed RHSA-2018:2822
Red Hat OpenStack Platform 13.0Fixed RHSA-2018:2822
Red Hat OpenStack Platform 8.0 (Liberty)Fixed RHSA-2018:2822
Red Hat OpenStack Platform 9.0Fixed RHSA-2018:2822
Red Hat Virtualization 4 Management Agent for RHEL 7 HostsFixed RHSA-2018:2887
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-11806
  2. 2026-10-03 Alias added: GHSA-2vg8-mhwg-wq3f

References

Patch 1

Advisory 12

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences