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 perfUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernelUpgrade kernel-debug-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-libsUpgrade kernel-headersUpgrade python-perfUpgrade kernel-toolsUpgrade kernel-debug | Jun 17, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade perfUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade python-perfUpgrade kernelUpgrade kernel-develUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernel-debuginfo-common-x86_64 | Apr 16, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade kernel-develUpgrade perfUpgrade kernel-tools-libsUpgrade kernel-headersUpgrade kernelUpgrade python-perfUpgrade kernel-tools | Feb 24, 2020 | Dec 22, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-develUpgrade python-perfUpgrade kernel-sourceUpgrade kernel-headersUpgrade kernel-toolsUpgrade kernelUpgrade python3-perfUpgrade 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-rtNo solution existsUpgrade kernel | Apr 17, 2020 | Dec 22, 2019 |
| Suse | — | Upgrade kernel-default | Feb 4, 2022 | Dec 22, 2019 |
| Ubuntu | — | Upgrade linux-image-oracle-edgeUpgrade linux-image-gcpUpgrade linux-image-5.0.0-38-generic-lpaeUpgrade linux-image-5.0.0-38-lowlatencyUpgrade linux-image-virtualUpgrade linux-image-raspi2Upgrade linux-image-awsUpgrade linux-image-5.0.0-38-genericUpgrade linux-image-oem-osp1Upgrade linux-image-kvmUpgrade linux-image-5.0.0-1009-oracleUpgrade linux-image-5.0.0-1033-oem-osp1Upgrade linux-image-gke-5.0Upgrade linux-image-gkeUpgrade linux-image-generic-lpaeUpgrade linux-image-5.0.0-1024-raspi2Upgrade linux-image-5.0.0-1023-awsUpgrade linux-image-genericUpgrade linux-image-azureUpgrade linux-image-5.0.0-1028-azureUpgrade linux-image-5.0.0-1027-gkeUpgrade linux-image-5.0.0-1028-gcpUpgrade linux-image-lowlatencyUpgrade linux-image-oracleUpgrade linux-image-5.0.0-1024-kvmUpgrade linux-image-aws-edge | 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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