Bug 1650563

Summary:	nscd: Fix use-after-free in addgetnetgrentX [BZ #23520]
Product:	Red Hat Enterprise Linux 8	Reporter:	Carlos O'Donell <codonell>
Component:	glibc	Assignee:	Florian Weimer <fweimer>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Alexandra Petlanová Hájková <ahajkova>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	8.0	CC:	ahajkova, ashankar, codonell, dj, fweimer, mcermak, mnewsome, pfrankli, skolosov
Target Milestone:	rc
Target Release:	8.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glibc-2.28-30.el8	Doc Type:	No Doc Update
Doc Text:	undefined	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-14 01:29:14 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:

Description Carlos O'Donell 2018-11-16 13:55:59 UTC

addinnetgrX may use the heap-allocated buffer, so free the buffer
in this function.

(cherry picked from commit 745664bd798ec8fd50438605948eea594179fba1)

We need to backport this commit:

https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=7d174f53539bfbfa9cdfa41ead605573d3f219eb

Comment 3 Alexandra Petlanová Hájková 2019-01-29 17:33:53 UTC

I checked https://cov01.lab.eng.brq.redhat.com/covscanhub/task/105046/log/glibc-2.28-28.el8/scan-results.err?format=raw contains glibc-2.28/nscd/netgroupcache.c:444: use_after_free: Using freed pointer "dataset", and https://cov01.lab.eng.brq.redhat.com/covscanhub/task/105305/log/glibc-2.28-34.el8/scan-results.err?format=raw doesn't contain such a warning anymore.