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: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: 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: ---
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