Bug 488935 – CVE-2009-0935 kernel: inotify local DoS

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Bug 488935 - (CVE-2009-0935) CVE-2009-0935 kernel: inotify local DoS

Summary:	CVE-2009-0935 kernel: inotify local DoS

Status:	CLOSED NOTABUG

Aliases:	CVE-2009-0935

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

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

URL:
Whiteboard:	public=20090122,source=lkml,reported=...
Keywords:	Security

Depends On:	489259 489260 489261
Blocks:
	Show dependency tree / graph

Reported:	2009-03-06 04:29 EST by Eugene Teo (Security Response)
Modified:	2018-10-19 21:52 EDT (History)
CC List:	5 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2009-05-14 21:37:39 EDT
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 (5.59 KB, patch) 2009-03-06 04:58 EST, Eugene Teo (Security Response)	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Eugene Teo (Security Response) 2009-03-06 04:29:11 EST

Description of problem:
If userspace supplies an invalid pointer to a read() of an inotify instance, the inotify device's event list mutex is unlocked twice. This causes an unbalance which effectively leaves the data structure unprotected, and we can trigger oopses by accessing the inotify instance from different tasks concurrently.

http://patchwork.kernel.org/patch/4857/

Comment 1 Eugene Teo (Security Response) 2009-03-06 04:58:44 EST

Created attachment 334277 [details]
Upstream patch

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3632dee2f8b8a9720329f29eeaa4ec4669a3aff8

Comment 17 Eugene Teo (Security Response) 2009-03-19 00:18:18 EDT

CVSS2 score of medium, 4.7 (AV:L/AC:M/Au:N/C:N/I:N/A:C)

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