Bug 1320599

Summary:	glibc: NULL pointer dereference in stub resolver with unconnectable name server addresses
Product:	Red Hat Enterprise Linux 6	Reporter:	Florian Weimer <fweimer>
Component:	glibc	Assignee:	glibc team <glibc-bugzilla>
Status:	CLOSED WONTFIX	QA Contact:	qe-baseos-tools-bugs
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	6.8	CC:	ashankar, codonell, fweimer, mcermak, mnewsome, pfrankli
Target Milestone:	rc	Keywords:	Patch
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1316972	Environment:
Last Closed:	2017-11-08 10:16:18 UTC	Type:	Bug
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:	1316972
Bug Blocks:

Description Florian Weimer 2016-03-23 15:27:42 UTC

+++ This bug was initially created as a clone of Bug #1316972 +++

If /etc/resolv.conf contains addresses which cause the connect system call to fail immediately, queries which trigger search along the search path result in a segmentation fault.

A workaround is to remove the problematic addresses from /etc/resolv.conf.

--- Additional comment from Florian Weimer on 2016-03-23 16:22:08 CET ---

swbz#19825 is a very similar bug in send_vc/TCP (the original bug is about send_dg/UDP), so far only observed under valgrind.

swbz#19831 and swbz#19830 should be backported as well, to get cleaner test suite runs.

Comment 3 Carlos O'Donell 2016-10-25 12:28:04 UTC

This bug did not make the rhel-6.9 release but will be reconsidered for rhel-6.10.

Comment 7 Florian Weimer 2017-11-08 10:16:13 UTC

Red Hat Enterprise Linux 6 transitioned to the Production 3 Phase on May 10,
2017.  During the Production 3 Phase, Critical impact Security Advisories
(RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released
as they become available.

This issue does not qualify, but it was addressed in Red Hat Enterprise Linux 7 as bug 1320596.

Comment 8 Red Hat Bugzilla Rules Engine 2017-11-08 10:16:18 UTC

Development Management has reviewed and declined this request. You may appeal this decision by reopening this request.