CVE-2019-19922: canonical ubuntu_linux Uncontrolled Resource Consumption
Vulnerability summary
CVE-2019-19922 is a medium (CVSS 5.5) Uncontrolled Resource Consumption vulnerability in canonical ubuntu_linux. EPSS estimates a 0.95% chance of exploitation in the next 30 days, higher than 61.2% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 1Timeline
- 22-12-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.)
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.95%
Chance of exploitation in the next 30 days
Percentile
61%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.95% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (relistan.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu27 products
- linux< 4.15.0-69.78
- linux-aws< 4.15.0-1054.56
- linux-aws-5.0< 5.0.0-1023.26~18.04.1
- linux-aws-hwe< 4.15.0-1054.56~16.04.1
- linux-azure< 4.15.0-1063.68~14.04.1 | < 4.15.0-1063.68 | < 5.0.0-1027.29~18.04.1
Netapp10 products
- active_iq_unified_managerna
- aff_baseboard_management_controllera700
- cloud_backupna
- data_availability_servicesna
- e-series_santricity_os_controller≥ 11.0, ≤ 11.70.2
Debian2 products
- linux< 5.3.9-1
- debian_linuxEOL8.0
Canonical1 product
- ubuntu_linuxEOL18.04 | 19.04
Linux1 product
- linux_kernel< 5.3.9
Oracle1 product
- sd-wan_edge8.2
6 vendors · 42 products
References
14 links
lists.debian.org/debian-lts-announce/2020/01/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9X Refsource MISCREPORTMailing ListPatchVendor Advisory
- github.com/torvalds/linux/commit/de53fd7aedb100f03e5d2231cfce0e4993282425X Refsource MISCREPORTPatchThird Party Advisory
- relistan.com/the-kernel-may-be-slowing-down-your-appX Refsource MISCREPORTExploitThird Party Advisory
- github.com/kubernetes/kubernetes/issues/67577X Refsource MISCREPORTIssue TrackingPatchThird Party Advisory