Bug 488935 (CVE-2009-0935) - CVE-2009-0935 kernel: inotify local DoS
Summary: CVE-2009-0935 kernel: inotify local DoS
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2009-0935
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 489259 489260 489261
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-03-06 09:29 UTC by Eugene Teo (Security Response)
Modified: 2021-11-12 19:56 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-05-15 01:37:39 UTC
Embargoed:

Attachments (Terms of Use)
Upstream patch (5.59 KB, patch)
2009-03-06 09:58 UTC, Eugene Teo (Security Response) 		no flags Details | Diff
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Description Eugene Teo (Security Response) 2009-03-06 09:29:11 UTC 
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 09:58:44 UTC 
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 04:18:18 UTC 
CVSS2 score of medium, 4.7 (AV:L/AC:M/Au:N/C:N/I:N/A:C)
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