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CVE-2019-19922

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.)

Risk Information

Base Score
5.5
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.106

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-4226-1) linux-image-aws_5.0.0.1023.25_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-gcp_5.0.0.1028.53_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-gke_5.0.0.1028.53_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-kvm_5.0.0.1024.25_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-azure_5.0.0.1028.28_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-azure_5.0.0.1028.39_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-oracle_5.0.0.1009.35_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-generic_5.0.0.38.40_i386.debLinux
Linux kernel (USN-4226-1) linux-image-generic_5.0.0.38.40_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-gke-5.0_5.0.0.1027.16_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-virtual_5.0.0.38.40_i386.debLinux
Linux kernel (USN-4226-1) linux-image-virtual_5.0.0.38.40_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-aws-edge_5.0.0.1023.37_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-oem-osp1_5.0.0.1033.37_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-lowlatency_5.0.0.38.40_i386.debLinux
Linux kernel (USN-4226-1) linux-image-lowlatency_5.0.0.38.40_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-oracle-edge_5.0.0.1009.8_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1023-aws_5.0.0-1023.26_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1023-aws_5.0.0-1023.26~18.04.1_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1024-kvm_5.0.0-1024.26_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1027-gke_5.0.0-1027.28~18.04.1_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1028-gcp_5.0.0-1028.29_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1028-azure_5.0.0-1028.30_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1028-azure_5.0.0-1028.30~18.04.1_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-38-generic_5.0.0-38.41_i386.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-38-generic_5.0.0-38.41_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1009-oracle_5.0.0-1009.14_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1009-oracle_5.0.0-1009.14~18.04.1_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-1033-oem-osp1_5.0.0-1033.38_amd64.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-38-lowlatency_5.0.0-38.41_i386.debLinux
Linux kernel (USN-4226-1) linux-image-5.0.0-38-lowlatency_5.0.0-38.41_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234