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TI-2019-04910 Aliases CVE-2019-6974GHSA-gvrg-rwmc-m69h

In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c…

Priority MEDIUM 52CWE-362Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free.

Why it matters now

EPSS 0.16523 97th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD and the CNA
Fix Fixed Red Hat: 5 advisories

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 · 30

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*3.10 to before 3.16.64; 3.17 to before 3.18.136; 3.19 to before 4.4.176; 4.5 to before 4.9.156; 4.10 to before 4.14.99; 4.15 to before 4.19.21; 4.20 to before 4.20.8VulnerableLinux
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*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:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.10 to before 3.16.64; 3.17 to before 3.18.136; 3.19 to before 4.4.176; 4.5 to before 4.9.156; 4.10 to before 4.14.99; 4.15 to before 4.19.21; 4.20 to before 4.20.8 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* 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:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
Show 20 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0VulnerableF5
cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*3.11VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed 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_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* Versions 13.0.0 – 13.1.1; 14.0.0 – 14.1.0; 15.0.0 to before 15.1.0 Vulnerable ·F5
  • cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:* Versions 3.11 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 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_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 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_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* Versions 7.4 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_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 5 advisories

  • RHSA-2020:0103 Released 2020-01-14 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) kernel-3.10.0-693.62.1.el7, kernel-abi-whitelists-3.10.0-693.62.1.el7, kernel-debug-3.10.0-693.62.1.el7 +7
    • Red Hat Enterprise Linux Server E4S (v. 7.4) kernel-3.10.0-693.62.1.el7, kernel-abi-whitelists-3.10.0-693.62.1.el7, kernel-bootwrapper-3.10.0-693.62.1.el7 +8
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.62.1.el7
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) kernel-debug-devel-3.10.0-693.62.1.el7, kernel-tools-libs-devel-3.10.0-693.62.1.el7
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.62.1.el7
    • Red Hat Enterprise Linux Server TUS (v. 7.4) kernel-3.10.0-693.62.1.el7, kernel-abi-whitelists-3.10.0-693.62.1.el7, kernel-debug-3.10.0-693.62.1.el7 +7
  • RHSA-2019:3967 Released 2019-11-26 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) kernel-3.10.0-862.44.2.el7, kernel-abi-whitelists-3.10.0-862.44.2.el7, kernel-debug-3.10.0-862.44.2.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) kernel-tools-libs-devel-3.10.0-862.44.2.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.5) kernel-3.10.0-862.44.2.el7, kernel-abi-whitelists-3.10.0-862.44.2.el7, kernel-bootwrapper-3.10.0-862.44.2.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.5) kernel-debug-devel-3.10.0-862.44.2.el7, kernel-tools-libs-devel-3.10.0-862.44.2.el7
  • RHSA-2019:2809 Released 2019-09-20 · Red Hat rating Important
    kernel-alt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.12.1.el7a, kernel-abi-whitelists-4.14.0-115.12.1.el7a, kernel-alt-4.14.0-115.12.1.el7a +9
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.12.1.el7a, kernel-tools-libs-devel-4.14.0-115.12.1.el7a
Show 2 more Red Hat advisories
  • RHSA-2019:0818 Released 2019-04-23 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-957.12.1.el7, kernel-3.10.0-957.12.1.el7, kernel-abi-whitelists-3.10.0-957.12.1.el7 +9
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.12.1.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-957.12.1.el7, kernel-3.10.0-957.12.1.el7, kernel-abi-whitelists-3.10.0-957.12.1.el7 +9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.12.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-957.12.1.el7, kernel-3.10.0-957.12.1.el7, kernel-abi-whitelists-3.10.0-957.12.1.el7 +12
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-957.12.1.el7, kernel-tools-libs-devel-3.10.0-957.12.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-957.12.1.el7, kernel-3.10.0-957.12.1.el7, kernel-abi-whitelists-3.10.0-957.12.1.el7 +9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.12.1.el7
  • RHSA-2019:0833 Released 2019-04-23 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-957.12.1.rt56.927.el7, kernel-rt-debug-3.10.0-957.12.1.rt56.927.el7, kernel-rt-debug-devel-3.10.0-957.12.1.rt56.927.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-957.12.1.rt56.927.el7, kernel-rt-debug-3.10.0-957.12.1.rt56.927.el7, kernel-rt-debug-devel-3.10.0-957.12.1.rt56.927.el7 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:0818
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:0818
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:0818
Red Hat Enterprise Linux ComputeNode EUS (v. 7.5)Fixed RHSA-2019:3967
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:0818
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5)Fixed RHSA-2019:3967
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2019:0833
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:0818
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2020:0103
Red Hat Enterprise Linux Server E4S (v. 7.4)Fixed RHSA-2020:0103
Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2019:3967
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:0818
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2020:0103
Red Hat Enterprise Linux Server Optional E4S (v. 7.4)Fixed RHSA-2020:0103
Red Hat Enterprise Linux Server Optional EUS (v. 7.5)Fixed RHSA-2019:3967
Red Hat Enterprise Linux Server Optional TUS (v. 7.4)Fixed RHSA-2020:0103
Red Hat Enterprise Linux Server TUS (v. 7.4)Fixed RHSA-2020:0103
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:0818
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:0818
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2019:2809
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2019:2809
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2019:0833
Not affected: 4 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise MRG 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-6974
  2. 2026-10-03 Alias added: GHSA-gvrg-rwmc-m69h

References

Exploit 3

Patch 1

Advisory 22

Other 1

Sources

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