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-tools-libsUpgrade kernel-headersUpgrade python-perfUpgrade kernel-debugUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-develUpgrade kernel-debug-develUpgrade kernel-debuginfoUpgrade kernelUpgrade perf | Jun 17, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade perfUpgrade kernel-headersUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade python-perfUpgrade kernel-toolsUpgrade kernel-develUpgrade kernel-tools-libs | Apr 16, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade kernel-tools-libsUpgrade kernel-develUpgrade perfUpgrade kernel-headersUpgrade kernel-toolsUpgrade python-perfUpgrade kernel | Feb 24, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade kernelUpgrade python3-perfUpgrade perfUpgrade kernel-toolsUpgrade kernel-develUpgrade kernel-headersUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel-sourceUpgrade python-perf | 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 kernel-rtUpgrade kernelNo solution exists | Apr 17, 2020 | Dec 22, 2019 |
| Suse | — | Upgrade kernel-default | Feb 4, 2022 | Dec 22, 2019 |
| Ubuntu | — | Upgrade linux-image-5.0.0-1033-oem-osp1Upgrade linux-image-5.0.0-38-genericUpgrade linux-image-oracle-edgeUpgrade linux-image-awsUpgrade linux-image-5.0.0-38-generic-lpaeUpgrade linux-image-5.0.0-1009-oracleUpgrade linux-image-gke-5.0Upgrade linux-image-5.0.0-38-lowlatencyUpgrade linux-image-oem-osp1Upgrade linux-image-kvmUpgrade linux-image-virtualUpgrade linux-image-raspi2Upgrade linux-image-gcpUpgrade linux-image-azureUpgrade linux-image-oracleUpgrade linux-image-genericUpgrade linux-image-aws-edgeUpgrade linux-image-5.0.0-1024-raspi2Upgrade linux-image-5.0.0-1024-kvmUpgrade linux-image-lowlatencyUpgrade linux-image-5.0.0-1028-gcpUpgrade linux-image-gkeUpgrade linux-image-5.0.0-1027-gkeUpgrade linux-image-5.0.0-1028-azureUpgrade linux-image-generic-lpaeUpgrade linux-image-5.0.0-1023-aws | 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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