Bug 488196 – kernel: selinux: selinux_netlbl_inode_permission() null pointer deref

Bug 488196 - kernel: selinux: selinux_netlbl_inode_permission() null pointer deref

Summary:	kernel: selinux: selinux_netlbl_inode_permission() null pointer deref

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	high Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	public=20090227,source=vendorsec,repo...
Keywords:	Security

Depends On:	488200 488201 488202
Blocks:
	Show dependency tree / graph

Reported:	2009-03-03 01:08 EST by Eugene Teo (Security Response)
Modified:	2016-03-04 06:10 EST (History)
CC List:	12 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2009-03-05 20:33:42 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Upstream patch (1.33 KB, patch) 2009-03-03 01:15 EST, Eugene Teo (Security Response)	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Eugene Teo (Security Response) 2009-03-03 01:08:41 EST

Description of problem:
Rick McNeal from LSI identified a panic in selinux_netlbl_inode_permission() caused by a certain sequence of SUNRPC operations. The problem appears to be due to the lack of NULL pointer checking in the function; the patch for this issue adds the pointer checks so the function will exit safely in the cases where the socket is not completely initialized.

Comment 1 Eugene Teo (Security Response) 2009-03-03 01:15:20 EST

Created attachment 333839 [details]
Upstream patch

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d7f59dc4642ce2fc7b79fcd4ec02ffce7f21eb02

Comment 10 Eugene Teo (Security Response) 2009-03-05 20:33:42 EST

It appears that the problem is caused by the test case/out of tree code. The problem is not in the selinux or the netlabel code. Closing bugs.

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