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Resource Exhaustion The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers  (opens in a new tab)

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EPSS
0.06% (19th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELCROSSHEADERS-3741564
  • published26 Jul 2021
  • disclosed22 Dec 2019
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Introduced: 22 Dec 2019

CVE-2019-19922  (opens in a new tab)
CWE-400  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by RHEL.

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.)