Bug 736346

Summary:	make initgroups (setgroups) thread aware
Product:	Red Hat Enterprise Linux 6	Reporter:	Petr Matousek <pmatouse>
Component:	glibc	Assignee:	Andreas Schwab <schwab>
Status:	CLOSED ERRATA	QA Contact:	qe-baseos-tools-bugs
Severity:	unspecified	Docs Contact:
Priority:	medium
Version:	6.1	CC:	fweimer, jakub, mfranc
Target Milestone:	rc
Target Release:	6.2
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glibc-2.12-1.40.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-12-06 17:48:07 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:
Bug Blocks:	722583, 743047

Description Petr Matousek 2011-09-07 13:15:15 UTC

Description of problem:

When calling set*id after creating threads recent glibc does cross thread
signalling so that *id are set in all threads. When using raw syscalls or not
glibc, *id is set for the calling thread only.

initgroups (setgroups) in rhel glibc is not working that way. we are
missing upstream commit 70181fddf1467996bea393d13294ffe76b8a0853.

This blocks RHEL6 fix for CVE-2011-2527 (initgroups is called after multiple thread creation).

Comment 1 Petr Matousek 2011-09-07 13:18:25 UTC

Upstream bug/fix:

http://sourceware.org/bugzilla/show_bug.cgi?id=10563
http://repo.or.cz/w/glibc.git/commitdiff/70181fddf1467996bea393d13294ffe76b8a0853

Comment 5 errata-xmlrpc 2011-12-06 17:48:07 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2011-1526.html