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CVE-2019-19922

Status Candidate

Overview

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.)

Related Files

Red Hat Security Advisory 2020-1567-01
Posted Apr 28, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1567-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include denial of service, information leakage, integer overflow, null pointer, out of bounds read, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2018-16871, CVE-2019-10639, CVE-2019-15090, CVE-2019-15099, CVE-2019-15221, CVE-2019-17053, CVE-2019-17055, CVE-2019-18805, CVE-2019-19057, CVE-2019-19073, CVE-2019-19074, CVE-2019-19534, CVE-2019-19768, CVE-2019-19922, CVE-2019-8980, CVE-2020-1749
MD5 | ec8d8281d2addf6eda4cf0fadf921ae7
Red Hat Security Advisory 2020-1769-01
Posted Apr 28, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1769-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include denial of service, information leakage, integer overflow, null pointer, out of bounds read, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2018-16871, CVE-2019-10639, CVE-2019-15090, CVE-2019-15099, CVE-2019-15221, CVE-2019-17053, CVE-2019-17055, CVE-2019-18805, CVE-2019-19057, CVE-2019-19073, CVE-2019-19074, CVE-2019-19534, CVE-2019-19768, CVE-2019-19922, CVE-2019-8980, CVE-2020-1749
MD5 | 98c2d2f24981ab95a830a2ac0663ca3c
Red Hat Security Advisory 2020-1493-01
Posted Apr 16, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1493-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include buffer overflow, denial of service, heap overflow, and null pointer vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2019-14895, CVE-2019-14901, CVE-2019-15031, CVE-2019-15099, CVE-2019-15666, CVE-2019-19922, CVE-2019-20054, CVE-2019-20095, CVE-2019-5108
MD5 | d23a11d29af809a4480f6714ad12414d
Ubuntu Security Notice USN-4226-1
Posted Jan 7, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4226-1 - Michael Hanselmann discovered that the CIFS implementation in the Linux kernel did not sanitize paths returned by an SMB server. An attacker controlling an SMB server could use this to overwrite arbitrary files. It was discovered that a heap-based buffer overflow existed in the Marvell WiFi-Ex Driver for the Linux kernel. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, overflow, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2019-10220, CVE-2019-14901, CVE-2019-16231, CVE-2019-16233, CVE-2019-17075, CVE-2019-17133, CVE-2019-18660, CVE-2019-18813, CVE-2019-19045, CVE-2019-19048, CVE-2019-19052, CVE-2019-19055, CVE-2019-19060, CVE-2019-19065, CVE-2019-19067, CVE-2019-19072, CVE-2019-19075, CVE-2019-19083, CVE-2019-19524, CVE-2019-19526, CVE-2019-19529, CVE-2019-19532, CVE-2019-19534, CVE-2019-19922, CVE-2019-2214
MD5 | 6ffbd397b56749edf4497b880653407f
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