CVE-2018-5390 7.5 high EPSS 72%
High (7.5). EPSS 72% chance of exploitation in the next 30 days.
Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service.
Severity
CVSS 3.1 7.5 high CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HEnable JavaScript to see the metric table and diagram.
EPSS 72% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
CWE CWE-400
Published 2018-08-06
Modified 2026-06-17
Record from the NVD, synced 2026-10-19 Affected a10networks:advanced_core_operating_system canonical:ubuntu_linux cisco:collaboration_meeting_rooms cisco:digital_network_architecture_center cisco:expressway cisco:expressway_series cisco:meeting_management cisco:network_assurance_engine cisco:telepresence_conductor_firmware cisco:telepresence_video_communication_server_firmware cisco:threat_grid-cloud cisco:webex_hybrid_data_security cisco:webex_video_mesh debian:debian_linux f5:big-ip_access_policy_manager f5:big-ip_advanced_firewall_manager f5:big-ip_analytics f5:big-ip_application_acceleration_manager f5:big-ip_application_security_manager f5:big-ip_domain_name_system f5:big-ip_edge_gateway f5:big-ip_fraud_protection_service f5:big-ip_global_traffic_manager f5:big-ip_link_controller f5:big-ip_local_traffic_manager f5:big-ip_policy_enforcement_manager f5:big-ip_webaccelerator f5:traffix_systems_signaling_delivery_controller hp:aruba_airwave_amp hp:aruba_clearpass_policy_manager linux:linux_kernel redhat:enterprise_linux_desktop redhat:enterprise_linux_server redhat:enterprise_linux_server_aus redhat:enterprise_linux_server_eus redhat:enterprise_linux_server_tus redhat:enterprise_linux_workstation redhat:virtualization References Check your stack JSON