Bug 1333309 (CVE-2016-4485)

Summary:	CVE-2016-4485 kernel: Information leak in llc module
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	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
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 [llc] module was found in "net/llc/af_llc.c". The stack object "info" has a total size of 12 bytes. Its last byte is padding which is not initialized and leaked via put_cmsg().	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-01 15:03:41 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 09:16:43 UTC

An information leak vulnerability in [llc] module was found in "net/llc/af_llc.c". The stack object "info" has a total size of 12 bytes. Its last byte is padding which is not initialized and leaked via put_cmsg().

Public via:

http://marc.info/?l=linux-kernel&m=146230753506235&w=2

http://marc.info/?l=linux-netdev&m=146230754406241&w=2

CVE-ID request and assignment:

http://seclists.org/oss-sec/2016/q2/233

http://seclists.org/oss-sec/2016/q2/236

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=b8670c09f37bdf2847cc44f36511a53afc6161fd

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b8670c09f37bdf2847cc44f36511a53afc6161fd

Comment 1 Adam Mariš 2016-05-05 09:40:45 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1333321]

Comment 2 Fedora Update System 2016-05-14 23:23:12 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 14:52:57 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 2016-06-01 15:02:25 UTC

Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2 as the related code with the flaw is not present in the products listed.

Comment 6 Fedora Update System 2016-06-02 15:00:04 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.