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Bug 1995483

Summary:	tcp_wrapper related daemons eat 100% CPU when a line of hosts.allow is exceeds 2048byte
Product:	Red Hat Enterprise Linux 7	Reporter:	Flos Qi Guo <qguo>
Component:	tcp_wrappers	Assignee:	Jakub Jelen <jjelen>
Status:	CLOSED WONTFIX	QA Contact:	qe-baseos-daemons
Severity:	high	Docs Contact:
Priority:	high
Version:	7.9	CC:	antihong, jlieskov, plautrba, qe-baseos-daemons, rmcswain
Target Milestone:	rc	Keywords:	Patch
Target Release:	---	Flags:	pm-rhel: mirror+
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	727445	Environment:
Last Closed:	2021-08-24 09:16:28 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	727445
Bug Blocks:	731350, 1002709

Comment 4 Jakub Jelen 2021-08-24 09:16:28 UTC

RHEL 7 is in maintanance phase 2, which means

> Red Hat defined Critical and Important impact Security Advisories (RHSAs) and selected (at Red Hat discretion) Urgent Priority Bug Fix Advisories (RHBAs) 

https://access.redhat.com/support/policy/updates/errata#Maintenance_Support_2_Phase

This does not fall into either of these (if it would, it would be already fixed), moreover the tcp_wrappers are deprecated in RHEL7 and not available in any further releases.

Instead of spending more of our time on fixing tcp_wrappers, your time debugging tcp_wrappers and customer's time to setting up rules in tcp_wrappers, I would suggest to move the rules into firewall or iptables, as they can use them also in RHEL8 and newer.