Bug 1321954

Summary:	CVE-2016-3075 glibc: Stack overflow in nss_dns_getnetbyname_r [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Adam Mariš <amaris>
Component:	glibc	Assignee:	Florian Weimer <fweimer>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	low
Version:	23	CC:	arjun.is, codonell, dj, fweimer, jakub, law, mfabian, pfrankli, sardella, siddhesh
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	glibc-2.22-15.fc23, glibc-2.23.1-7.fc24	Doc Type:	Release Note
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-05-15 04:53:34 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:	1321866

Description Adam Mariš 2016-03-29 13:03:22 UTC

This is an automatically created tracking bug!  It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.

For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.

For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs

When submitting as an update, use the fedpkg template provided in the next
comment(s).  This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.

Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.

NOTE: this issue affects multiple supported versions of Fedora. While only
one tracking bug has been filed, please correct all affected versions at
the same time.  If you need to fix the versions independent of each other,
you may clone this bug as appropriate.

[bug automatically created by: add-tracking-bugs]

Comment 1 Adam Mariš 2016-03-29 13:03:32 UTC

Use the following template to for the 'fedpkg update' request to submit an
update for this issue as it contains the top-level parent bug(s) as well as
this tracking bug.  This will ensure that all associated bugs get updated
when new packages are pushed to stable.

=====

# bugfix, security, enhancement, newpackage (required)
type=security

# testing, stable
request=testing

# Bug numbers: 1234,9876
bugs=1321866,1321954

# Description of your update
notes=Security fix for CVE-2016-3075

# Enable request automation based on the stable/unstable karma thresholds
autokarma=True
stable_karma=3
unstable_karma=-3

# Automatically close bugs when this marked as stable
close_bugs=True

# Suggest that users restart after update
suggest_reboot=False

======

Additionally, you may opt to use the bodhi web interface to submit updates:

https://bodhi.fedoraproject.org/updates/new

Comment 2 Fedora Update System 2016-05-07 17:19:12 UTC

glibc-2.22-15.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-68abc0be35

Comment 3 Fedora Update System 2016-05-08 16:25:16 UTC

glibc-2.22-15.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-68abc0be35

Comment 4 Florian Weimer 2016-05-09 09:27:48 UTC

Fixed by a pre-existing 2.23 backport (still needs changelog entry in the next Fedora update):

commit 146b58d11fddbef15b888906e3be4f33900c416f
Author: Florian Weimer <fweimer>
Date:   Tue Mar 29 12:57:56 2016 +0200

    CVE-2016-3075: Stack overflow in _nss_dns_getnetbyname_r [BZ #19879]
    
    The defensive copy is not needed because the name may not alias the
    output buffer.
    
    (cherry picked from commit 317b199b4aff8cfa27f2302ab404d2bb5032b9a4)
    (cherry picked from commit 883dceebc8f11921a9890211a4e202e5be17562f)

Comment 5 Fedora Update System 2016-05-09 14:56:43 UTC

glibc-2.23.1-6.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b321728d74

Comment 6 Fedora Update System 2016-05-10 17:57:22 UTC

glibc-2.22-15.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2016-05-10 20:30:06 UTC

glibc-2.23.1-6.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b321728d74

Comment 8 Fedora Update System 2016-05-11 13:55:03 UTC

glibc-2.23.1-7.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b321728d74

Comment 9 Fedora Update System 2016-05-12 09:44:01 UTC

glibc-2.23.1-7.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b321728d74

Comment 10 Fedora Update System 2016-05-14 23:29:57 UTC

glibc-2.23.1-7.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.