Bug 652508 (CVE-2010-4165)

Summary:	CVE-2010-4165 kernel: possible kernel oops from user MSS
Product:	[Other] Security Response	Reporter:	Eugene Teo (Security Response) <eteo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bhu, jmalanik, kernel-mgr, lgoncalv, pmatouse, rt-maint, vkrizan
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:	2015-07-29 13:18:28 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:	652509, 652510, 652511
Bug Blocks:

Description Eugene Teo (Security Response) 2010-11-12 05:06:06 UTC

With commit f5fff5dc8a7a3f395b0525c02ba92c95d42b7390, a user program
can pass in TCP_MAXSEG of 12 (or TCPOLEN_TSTAMP_ALIGNED), and cause
kernel oops with division by 0 in tcp_select_initial_window.

Proposed patch:
http://www.spinics.net/lists/netdev/msg146495.html

Reference:
http://www.spinics.net/lists/netdev/msg146405.html

Acknowledgements:

Red Hat would like to thank Steve Chen for reporting this issue.

Comment 3 Eugene Teo (Security Response) 2010-11-12 05:44:37 UTC

Statement:

This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as they did not backport the upstream commit that introduced the issue. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0283.html and https://rhn.redhat.com/errata/RHSA-2011-0330.html.

Comment 4 Eugene Teo (Security Response) 2010-11-22 06:18:02 UTC

Upstream commit:
http://git.kernel.org/linus/7a1abd08d52fdeddb3e9a5a33f2f15cc6a5674d2

Comment 5 errata-xmlrpc 2011-02-22 17:38:39 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0283 https://rhn.redhat.com/errata/RHSA-2011-0283.html

Comment 6 errata-xmlrpc 2011-03-10 20:04:33 UTC

This issue has been addressed in following products:

  MRG for RHEL-5

Via RHSA-2011:0330 https://rhn.redhat.com/errata/RHSA-2011-0330.html