Loop with Unreachable Exit Condition ('Infinite Loop') Affecting kernel-cross-headers package, versions <0:4.18.0-80.7.1.el8_0


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.46% (88th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELCROSSHEADERS-2536843
  • published10 Apr 2022
  • disclosed22 Feb 2019

Introduced: 22 Feb 2019

CVE-2018-20784  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-cross-headers to version 0:4.18.0-80.7.1.el8_0 or higher.
This issue was patched in ELSA-2019-1959.

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 Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.

CVSS Scores

version 3.1