Bug 1333316 (CVE-2016-4486)

Summary:	CVE-2016-4486 kernel: Information leak in rtnetlink
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	agordeev, aquini, arm-mgr, bhu, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, joelsmith, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, kstutsma, lgoncalv, lwang, madhu.chinakonda, matt, mchehab, mcressma, mguzik, nmurray, pholasek, plougher, rt-maint, rvrbovsk, slawomir, sparks, vdronov, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	An information leak vulnerability in rtnetlink subsystem in Linux kernel was found in "net/core/rtnetlink.c". The stack object "map" has a total size of 32 bytes. Its last 4 bytes are padding generated by compiler. These padding bytes are not initialized and sent out via nla_put().	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-02 13:24:02 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:	1333321
Bug Blocks:	1332934

Description Adam Mariš 2016-05-05 09:28:08 UTC

An information leak vulnerability in rtnetlink subsystem in Linux kernel was found in "net/core/rtnetlink.c". The stack object "map" has a total size of 32 bytes. Its last 4 bytes are padding generated by compiler. These padding bytes are not initialized and sent out via nla_put().

Public via:

http://marc.info/?l=linux-kernel&m=146230821206492&w=2

http://marc.info/?l=linux-netdev&m=146230822606494&w=2

CVE-ID request and assignment:

http://seclists.org/oss-sec/2016/q2/234

http://seclists.org/oss-sec/2016/q2/237

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=5f8e44741f9f216e33736ea4ec65ca9ac03036e6

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5f8e44741f9f216e33736ea4ec65ca9ac03036e6

Comment 1 Adam Mariš 2016-05-05 09:40:31 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1333321]

Comment 2 Fedora Update System 2016-05-14 23:23:27 UTC

kernel-4.5.4-300.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2016-05-16 14:53:12 UTC

kernel-4.4.9-200.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Vladis Dronov 2016-06-02 12:44:22 UTC

Statement:

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Comment 6 Fedora Update System 2016-06-02 15:00:21 UTC

kernel-4.5.5-201.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.