Bug 1183744 (CVE-2015-1465)

Summary:	CVE-2015-1465 kernel: net: DoS due to routing packets to too many different dsts/too fast
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	acaringi, agordeev, aquini, bhu, bmasney, brdeoliv, dhoward, dvlasenk, fhrbata, hkrzesin, hsowa, jshortt, jstancek, kernel-mgr, kyoshida, lwang, mguzik, mleitner, msiddiqu, nmurray, pholasek, plougher, ptalbert, rvrbovsk, security-response-team, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-02-04 15:00:30 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:	1181819, 1188347
Bug Blocks:	1183753

Description Petr Matousek 2015-01-19 16:42:44 UTC

It was found that routing packets to too many different dsts/too fast can lead
to a excessive resource consumption.

A remote attacker can use this flaw to crash the system.

Introduced by:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f88649721268999bdff09777847080a52004f691

Acknowledgements:

This issue was found by Marcelo Ricardo Leitner of Red Hat.

Comment 1 Petr Matousek 2015-02-02 16:32:00 UTC

Upstream patch:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=df4d92549f23e1c037e83323aff58a21b3de7fe0

Comment 2 Petr Matousek 2015-02-02 16:33:34 UTC

Statement:

This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.

Comment 3 Petr Matousek 2015-02-02 16:35:29 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1188347]

Comment 4 Fedora Update System 2015-02-06 04:00:22 UTC

kernel-3.18.5-201.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2015-02-07 04:01:01 UTC

kernel-3.18.5-101.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.