Bug 1226442 (CVE-2015-3212)

Summary:	CVE-2015-3212 kernel: SCTP race condition allows list corruption and panic from userlevel
Product:	[Other] Security Response	Reporter:	Fabio Olive Leite <fleite>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aquini, bhu, blc, dhoward, fhrbata, iboverma, jkacur, joelsmith, jross, kernel-mgr, lgoncalv, matt, mcressma, mlangsdo, nmurray, plougher, ppandit, rvrbovsk, security-response-team, williams, wmealing
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	A race condition flaw was found in the way the Linux kernel's SCTP implementation handled Address Configuration lists when performing Address Configuration Change (ASCONF). A local attacker could use this flaw to crash the system via a race condition triggered by setting certain ASCONF options on a socket.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:41:28 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:	1206474, 1227960, 1227961, 1227962, 1227963, 1244665, 1244666, 1244684, 1244692
Bug Blocks:	1226448

Description Fabio Olive Leite 2015-05-29 19:20:06 UTC

A flaw was found in the Linux kernels handling of the SCTPs automatic handling of dynamic multi-homed connections.  A race condition in the way the Linux kernel handles lists of associations in SCTP sockets using Address Configuration Change messages, leading to list corruption and panics.

References:
http://marc.info/?l=linux-netdev&m=143277436124732&w=2

Commit:
https://git.kernel.org/linus/2d45a02d0166caf2627fe91897c6ffc3b19514c4

Comment 1 Wade Mealing 2015-06-02 12:37:31 UTC

Acknowledgements:

This issue was discovered by Ji Jianwen of Red Hat Engineering.

Comment 4 Wade Mealing 2015-07-07 03:30:10 UTC

Statement:

This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5.

This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2.

Comment 9 errata-xmlrpc 2015-09-15 09:23:43 UTC

This issue has been addressed in the following products:

  MRG for RHEL-6 v.2

Via RHSA-2015:1787 https://rhn.redhat.com/errata/RHSA-2015-1787.html

Comment 10 errata-xmlrpc 2015-09-15 09:39:30 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:1788 https://rhn.redhat.com/errata/RHSA-2015-1788.html

Comment 11 errata-xmlrpc 2015-09-15 12:07:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:1778 https://rhn.redhat.com/errata/RHSA-2015-1778.html