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.)
References
Link | Resource |
---|---|
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9 | Mailing List Patch Vendor Advisory |
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de53fd7aedb100f03e5d2231cfce0e4993282425 | Mailing List Patch Vendor Advisory |
https://github.com/kubernetes/kubernetes/issues/67577 | Issue Tracking Patch Third Party Advisory |
https://github.com/torvalds/linux/commit/de53fd7aedb100f03e5d2231cfce0e4993282425 | Patch Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html | Mailing List Third Party Advisory |
https://relistan.com/the-kernel-may-be-slowing-down-your-app | Exploit Third Party Advisory |
https://security.netapp.com/advisory/ntap-20200204-0002/ | Third Party Advisory |
https://usn.ubuntu.com/4226-1/ | Third Party Advisory |
https://www.oracle.com/security-alerts/cpuApr2021.html | Patch Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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History
No history.
Information
Published : 2019-12-22 20:15
Updated : 2022-12-14 19:15
NVD link : CVE-2019-19922
Mitre link : CVE-2019-19922
CVE.ORG link : CVE-2019-19922
JSON object : View
Products Affected
netapp
- data_availability_services
- cloud_backup
- e-series_santricity_os_controller
- solidfire_baseboard_management_controller
- steelstore_cloud_integrated_storage
- active_iq_unified_manager
- hci_baseboard_management_controller
- solidfire_\&_hci_management_node
- aff_baseboard_management_controller
- fas\/aff_baseboard_management_controller
canonical
- ubuntu_linux
linux
- linux_kernel
debian
- debian_linux
oracle
- sd-wan_edge
CWE
CWE-400
Uncontrolled Resource Consumption