CVE-2019-19922

Fixed in a distro release EPSS <1%

kernel/sched/fair.c in the Linux kernel before 5.3.9, when cpu.cfs_quota_us is used (e.g., with Kubernetes), allows attackers to cause a denial of service against non-cpu-bound applications by generating a workload that triggers unwanted slice expiration, aka CID-de53fd7aedb1. (In other words, although this slice expiration would typically be seen with benign workloads, it is possible that an attacker could calculate how many stray requests are required to force an entire Kubernetes cluster into a low-performance state caused by slice expiration, and ensure that a DDoS attack sent that number of stray requests. An attack does not affect the stability of the kernel; it only causes mismanagement of application execution.)

Published 2019-12-22 · CVE record · OSV

Products: linux_kernel, oracle sd-wan_edge, canonical ubuntu_linux, debian_linux, netapp active_iq_unified_manager, netapp cloud_backup, netapp data_availability_services, netapp e-series_santricity_os_controller, netapp fas/aff_baseboard_management_controller, netapp hci_baseboard_management_controller, netapp solidfire_&_hci_management_node, netapp steelstore_cloud_integrated_storage

Distro releases