Bug 649693 (CVE-2010-3873)

Summary:	CVE-2010-3873 kernel: memory corruption in X.25 facilities parsing
Product:	[Other] Security Response	Reporter:	Eugene Teo (Security Response) <eteo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	lwang, pmatouse
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-10 22:32:45 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Eugene Teo (Security Response) 2010-11-04 10:19:43 UTC

Description of problem:
Due to bad parsing of malformed X.25 facilities, a remote attacker can
cause a kernel panic due to heap corruption (assuming both parties are
communicating using X.25).

Reference:
http://www.spinics.net/lists/netdev/msg145786.html
http://www.spinics.net/lists/netdev/msg145873.html

Acknowledgements:

Red Hat would like to thank Dan Rosenberg for reporting this issue.

Comment 1 Petr Matousek 2010-11-08 20:16:53 UTC

Statement:

This issue did not affect the version of Linux kernel as shipped with Red Hat
Enterprise Linux 3, 4, 5, and Red Hat Enterprise MRG as they did not include
support for CCITT X.25 Packet Layer.

Comment 2 Eugene Teo (Security Response) 2010-11-22 13:21:39 UTC

Upstream commit:
http://git.kernel.org/linus/a6331d6f9a4298173b413cf99a40cc86a9d92c37