Bug 1403261

Summary:	CVE-2016-9919 kernel: Linux panic on fragemented IPv6 traffic (icmp6_send) [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Andrej Nemec <anemec>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED INSUFFICIENT_DATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	25	CC:	cz172638, gansalmon, ichavero, itamar, jforbes, jonathan, jwboyer, kernel-maint, labbott, madhu.chinakonda, mchehab, vdronov
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---	Flags:	jforbes: needinfo?
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Release Note
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-04-28 17:10:28 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:
Bug Blocks:	1403260

Description Andrej Nemec 2016-12-09 14:26:56 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.

Reproducers, if any, will remain confidential and never be made public, unless done so by the security team.

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

Comment 1 Andrej Nemec 2016-12-09 14:27:10 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=1403260,1403261

# Description of your update
notes=Security fix for CVE-2016-9919

# 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 Vladis Dronov 2016-12-13 08:37:05 UTC

research:

there are a number of dependant commits:

79dc7e3f1c fixes 5d41ce29e3
5d41ce29e3 actually fixes 1d2f7b2d95 (which introduced the flaw) despite the commit message
1d2f7b2d95 (which introduced the flaw) fixes ca254490c8  

gtc 79dc7e3f1c
v4.9
v4.9-rc8

$ gtc 5d41ce29e3
v4.9
v4.9-rc6

$ gtc 1d2f7b2d95
v4.6
v4.7
v4.7-rc1

$ gtc ca254490c8
v4.4
v4.4-rc1

so, fedora is vulnerable as it has 1d2f7b2d95 but not 5d41ce29e3 + 79dc7e3f1c.

Comment 3 Justin M. Forbes 2017-04-11 14:52:00 UTC

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 25 kernel bugs.

Fedora 25 has now been rebased to 4.10.9-200.fc25.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.

If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26.

If you experience different issues, please open a new bug report for those.

Comment 4 Justin M. Forbes 2017-04-28 17:10:28 UTC

*********** MASS BUG UPDATE **************
This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 2 weeks. If you are still experiencing this issue, please reopen and attach the 
relevant data from the latest kernel you are running and any data that might have been requested previously.