CVE-2019-19922

Exp

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 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-19922 is rated Exploit Available (57.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.95%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-19922

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-19922

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.07% 0.95% +0.88%
2 2025-03-30 0.31% 0.07% -0.24%
3 2025-03-29 — 0.31% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-19922

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2019-19922

OS Trackers for CVE-2019-19922

vendor priority summary link
debian not yet assigned CVE-2019-19922 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-19922
redhat low — https://access.redhat.com/security/cve/CVE-2019-19922
suse medium CVE-2019-19922 severity moderate: SUSE including 389 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 536 product×package rows across 65 product lines (SUSE Liberty Linux 8, SUSE Linux Enterprise Desktop 12 SP4, … (65 product lines)): Fixed 229, Known Affected 157, Known Not Affected 150. https://www.suse.com/security/cve/CVE-2019-19922/
ubuntu medium CVE-2019-19922 medium priority: Ubuntu including 97 source packages (linux, linux-aws, …), 933 status rows across 12 suites (bionic, disco, eoan, focal, groovy, jammy, noble, oracular, plucky, trusty, upstream, xenial): DNE 636, not-affected 146, released 137, ignored 14. https://ubuntu.com/security/CVE-2019-19922

Affected software / configurations for CVE-2019-19922

Vendor Product Version Raw CPE
linux linux_kernel < 5.3.9 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
oracle sd-wan_edge 8.2 cpe:2.3:a:oracle:sd-wan_edge:8.2:*:*:*:*:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
netapp cloud_backup — cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
netapp data_availability_services — cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:*
netapp e-series_santricity_os_controller >= 11.0, <= 11.70.2 cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
netapp fas\/aff_baseboard_management_controller — cpe:2.3:a:netapp:fas\/aff_baseboard_management_controller:-:*:*:*:*:*:*:*
netapp hci_baseboard_management_controller h610s cpe:2.3:a:netapp:hci_baseboard_management_controller:h610s:*:*:*:*:*:*:*
netapp solidfire_\&_hci_management_node — cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
netapp steelstore_cloud_integrated_storage — cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
netapp aff_baseboard_management_controller a700 cpe:2.3:h:netapp:aff_baseboard_management_controller:a700:*:*:*:*:*:*:*
netapp solidfire_baseboard_management_controller — cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*

References for CVE-2019-19922

URL Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9 Mailing List Patch Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de53fd7aedb100f03e5d2231cfce0e4993282425 Mailing List Patch Vendor Advisory
https://github.com/kubernetes/kubernetes/issues/67577 Issue Tracking Patch Third Party Advisory
https://github.com/torvalds/linux/commit/de53fd7aedb100f03e5d2231cfce0e4993282425 Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html Mailing List Third Party Advisory
https://relistan.com/the-kernel-may-be-slowing-down-your-app Exploit Third Party Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/ Third Party Advisory
https://usn.ubuntu.com/4226-1/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html Patch Third Party Advisory
cvelogic Threat Intelligence