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 kernel-rtUpgrade kernel | Apr 17, 2020 | Dec 22, 2019 |
| Debian | — | Upgrade linux | Jan 20, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp2 | — | Upgrade kernel-develUpgrade kernel-debuginfoUpgrade perfUpgrade kernel-debug-develUpgrade kernelUpgrade python-perfUpgrade kernel-debugUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-libsUpgrade kernel-headers | Jun 17, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade kernel-develUpgrade kernel-debuginfoUpgrade perfUpgrade kernel-headers | Apr 16, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade kernel-develUpgrade kernel-tools-libsUpgrade perfUpgrade python-perfUpgrade kernelUpgrade kernel-headersUpgrade kernel-tools | Feb 24, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade perfUpgrade kernelUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel-develUpgrade kernel-headersUpgrade python-perfUpgrade bpftoolUpgrade kernel-source | Feb 26, 2020 | Dec 22, 2019 |
| Oracle_linux | — | Upgrade kernelUpgrade kernel-uek | Sep 12, 2020 | Dec 22, 2019 |
| Redhat Openshift | — | Upgrade redhat-coreos | Dec 29, 2020 | Dec 22, 2019 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Apr 17, 2020 | Dec 22, 2019 |
| Suse | — | Upgrade kernel-default | Feb 4, 2022 | Dec 22, 2019 |
| Ubuntu | — | Upgrade linux-image-5.0.0-1028-gcpUpgrade linux-image-lowlatencyUpgrade linux-image-5.0.0-1027-gkeUpgrade linux-image-5.0.0-1024-raspi2Upgrade linux-image-genericUpgrade linux-image-gkeUpgrade linux-image-oracleUpgrade linux-image-5.0.0-1024-kvmUpgrade linux-image-aws-edgeUpgrade linux-image-azureUpgrade linux-image-5.0.0-1023-awsUpgrade linux-image-5.0.0-1028-azureUpgrade linux-image-generic-lpaeUpgrade linux-image-awsUpgrade linux-image-5.0.0-1009-oracleUpgrade linux-image-oracle-edgeUpgrade linux-image-5.0.0-1033-oem-osp1Upgrade linux-image-5.0.0-38-generic-lpaeUpgrade linux-image-gcpUpgrade linux-image-raspi2Upgrade linux-image-5.0.0-38-lowlatencyUpgrade linux-image-kvmUpgrade linux-image-oem-osp1Upgrade linux-image-5.0.0-38-genericUpgrade linux-image-gke-5.0Upgrade linux-image-virtual | 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 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub