medium
5.5
CWE
400
Advisory Published
CVE Published
Updated

CVE-2019-19922

First published: Sun Dec 22 2019(Updated: )

A flaw was found in the Linux kernel’s scheduler, where it can allow attackers to cause a denial of service against non-CPU-bound applications by generating a workload that triggers unwanted scheduling slice expiration. A local attacker who can trigger a specific workload type could abuse this technique to trigger a system to be seen as degraded, and possibly trigger workload-rebalance in systems that use the slice-expiration metric as a measure of system health.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/kernel-alt<0:4.14.0-115.19.1.el7a
0:4.14.0-115.19.1.el7a
redhat/kernel-rt<0:4.18.0-193.rt13.51.el8
0:4.18.0-193.rt13.51.el8
redhat/kernel<0:4.18.0-193.el8
0:4.18.0-193.el8
Linux Kernel<5.3.9
Oracle SD-WAN Edge=8.2
Ubuntu=18.04
Ubuntu=19.04
Debian=8.0
NetApp Active IQ Unified Manager for VMware vSphere
NetApp Cloud Backup
NetApp Data Availability Services
NetApp E-Series SANtricity OS Controller>=11.0<=11.70.2
NetApp FAS/AFF Baseboard Management Controller
NetApp HCI Baseboard Management Controller=h610s
NetApp SolidFire & HCI Management Node
NetApp SteelStore Cloud Integrated Storage
NetApp FAS/AFF Baseboard Management Controller=a700
NetApp SolidFire
debian/linux
5.10.223-1
5.10.234-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.17-1

Remedy

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Remedy

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9

Remedy

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de53fd7aedb100f03e5d2231cfce0e4993282425

Remedy

https://github.com/kubernetes/kubernetes/issues/67577

Remedy

https://github.com/torvalds/linux/commit/de53fd7aedb100f03e5d2231cfce0e4993282425

Remedy

https://www.oracle.com/security-alerts/cpuApr2021.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2019-19922?

    CVE-2019-19922 has a severity rating of medium, as it can cause a denial of service for non-CPU-bound applications.

  • How do I fix CVE-2019-19922?

    To fix CVE-2019-19922, upgrade to the patched versions of the affected Linux kernel packages as specified by your distribution.

  • Which Linux distributions are affected by CVE-2019-19922?

    CVE-2019-19922 affects several Linux distributions, including Red Hat, Debian, Oracle Linux, and Ubuntu.

  • Can CVE-2019-19922 be exploited remotely?

    CVE-2019-19922 cannot be exploited remotely; it requires local access to the system to execute the specific workload.

  • What types of applications are impacted by CVE-2019-19922?

    CVE-2019-19922 specifically impacts non-CPU-bound applications that can be disrupted by the workload triggering unwanted scheduling slice expiration.

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