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 Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernelUpgrade kernel-rt | Apr 17, 2020 | Dec 22, 2019 |
| Debian | — | Upgrade linux | Jan 20, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp2 | — | Upgrade kernel-headersUpgrade kernel-debugUpgrade python-perfUpgrade kernel-tools-libsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-debug-develUpgrade kernel-develUpgrade perfUpgrade kernel-debuginfoUpgrade kernel | Jun 17, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade kernelUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade kernel-develUpgrade perfUpgrade kernel-headers | Apr 16, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade kernel-develUpgrade perfUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-toolsUpgrade kernel-headersUpgrade python-perf | Feb 24, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade kernel-toolsUpgrade perfUpgrade python3-perfUpgrade kernelUpgrade kernel-tools-libsUpgrade python-perfUpgrade kernel-develUpgrade kernel-headersUpgrade bpftoolUpgrade kernel-source | Feb 26, 2020 | Dec 22, 2019 |
| Oracle_linux | — | Upgrade kernel-uekUpgrade kernel | Sep 12, 2020 | Dec 22, 2019 |
| Redhat Openshift | — | Upgrade redhat-coreos | Dec 29, 2020 | Dec 22, 2019 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | Apr 17, 2020 | Dec 22, 2019 |
| Suse | — | Upgrade kernel-default | Feb 4, 2022 | Dec 22, 2019 |
| Ubuntu | — | Upgrade linux-image-5.0.0-38-lowlatencyUpgrade linux-image-virtualUpgrade linux-image-5.0.0-1033-oem-osp1Upgrade linux-image-awsUpgrade linux-image-gcpUpgrade linux-image-5.0.0-38-generic-lpaeUpgrade linux-image-5.0.0-1009-oracleUpgrade linux-image-raspi2Upgrade linux-image-kvmUpgrade linux-image-gke-5.0Upgrade linux-image-oracle-edgeUpgrade linux-image-oem-osp1Upgrade linux-image-5.0.0-38-genericUpgrade linux-image-genericUpgrade linux-image-5.0.0-1028-azureUpgrade linux-image-5.0.0-1024-kvmUpgrade linux-image-oracleUpgrade linux-image-azureUpgrade linux-image-5.0.0-1027-gkeUpgrade linux-image-aws-edgeUpgrade linux-image-5.0.0-1023-awsUpgrade linux-image-lowlatencyUpgrade linux-image-gkeUpgrade linux-image-5.0.0-1028-gcpUpgrade linux-image-generic-lpaeUpgrade linux-image-5.0.0-1024-raspi2 | Jan 8, 2020 | Dec 22, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Dec 22, 2019 |
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