Description
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
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2068-1 linux security update
EUVD EUVD EUVD-2019-9511 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.)
Ubuntu USN Ubuntu USN USN-4226-1 Linux kernel vulnerabilities
History

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Subscriptions

Canonical Ubuntu Linux
Debian Debian Linux
Linux Linux Kernel
Netapp Active Iq Unified Manager Aff Baseboard Management Controller Cloud Backup Data Availability Services E-series Santricity Os Controller Fas\/aff Baseboard Management Controller Hci Baseboard Management Controller Solidfire \& Hci Management Node Solidfire Baseboard Management Controller Steelstore Cloud Integrated Storage
Oracle Sd-wan Edge
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T02:32:10.074Z

Reserved: 2019-12-22T00:00:00.000Z

Link: CVE-2019-19922

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-12-22T20:15:10.823

Modified: 2024-11-21T04:35:40.277

Link: CVE-2019-19922

cve-icon Redhat

Severity : Low

Publid Date: 2019-12-22T00:00:00Z

Links: CVE-2019-19922 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses