Bug 1343337 (CVE-2016-5244)

Summary:	CVE-2016-5244 kernel: Information leak in rds_inc_info_copy
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
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, vdronov, williams, wmealing
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the Linux kernel in function rds_inc_info_copy of file net/rds/recv.c. The last field "flags" of object "minfo" is not initialized. This can leak data previously at the flags location to userspace.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-29 13:41:44 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:	1343338, 1348021
Bug Blocks:	1343340

Description Andrej Nemec 2016-06-07 07:46:00 UTC

A vulnerability was found in the Linux kernel in function rds_inc_info_copy of file net/rds/recv.c. The last field "flags" of object "minfo" is not initialized. Copying this object out may leak kernel stack data. Assign 0 to it to avoid leak.

Upstream bug:

https://patchwork.ozlabs.org/patch/629110/

Upstream fix:

https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=4116def2337991b39919f3b448326e21c40e0dbb

Comment 1 Andrej Nemec 2016-06-07 07:47:42 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1343338]

Comment 2 Fedora Update System 2016-06-17 15:49:44 UTC

kernel-4.4.13-200.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2016-06-17 15:59:59 UTC

kernel-4.5.7-200.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2016-06-18 18:36:16 UTC

kernel-4.5.7-300.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Wade Mealing 2016-06-20 01:47:56 UTC

Statement:

This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 5 and 6 and will not be addressed in a future update.

This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux  7, Realtime and Red Hat Enterprise 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/ .