Bug 579445 (CVE-2010-1148)

Summary:	CVE-2010-1148 kernel: cifs: skip posix open if nameidata is null
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:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dhoward, jlayton, jpirko, lwang, plyons, tao
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:	2010-04-28 00:37:58 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:	579446, 579447
Bug Blocks:

Description Eugene Teo (Security Response) 2010-04-05 08:42:17 UTC

Description of problem:
From me, while creating a file on a server which supports unix extensions such as Samba, if a file is being created which does not supply nameidata (i.e. nd is null), cifs client can oops when calling cifs_posix_open.

http://comments.gmane.org/gmane.linux.file-systems.cifs/5782

Comment 2 Eugene Teo (Security Response) 2010-04-09 07:18:50 UTC

[linux-cifs-client[[patch] Attempt #2 to handle null nameidata
http://old.nabble.com/-linux-cifs-client--patch--Attempt--2-to-handle-null-nameidata-td28167381.html

Comment 3 Eugene Teo (Security Response) 2010-04-28 00:37:58 UTC

Not vulnerable. This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, 5 and Red Hat Enterprise MRG as they did not include support for posix opens on lookup.

Comment 5 Eugene Teo (Security Response) 2010-06-07 06:12:37 UTC

Upstream commit:
http://git.kernel.org/linus/fa588e0c57048b3d4bfcd772d80dc0615f83fd35