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Insecure Library Loading
Not critical

NetBSD "azalia" and "hdaudio" Drivers Array Indexing Vulnerabilities

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Release Date:  2010-02-03    Last Update:  2010-02-10    Views:  3,793

Secunia Advisory SA38284

Where:

Local system

Impact:

DoS

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

Description


NetBSD has acknowledged some vulnerabilities in the azalia(4) and hdaudio(4) drivers, which can be exploited by malicious, local users to cause a DoS (Denial of Service).

The vulnerabilities are caused due to an array indexing error within the "azalia_query_devinfo()" function in src/sys/dev/pci/azalia.c and the "hdaudio_afg_query_devinfo()" function in src/sys/dev/pci/hdaudio/hdaudio_afg.c, which can be exploited to e.g. cause a kernel crash.

Successful exploitation requires that at least one azalia(4) or hdaudio(4) device is available and configured.


Solution:
Fixed in the CVS repository. See vendor's advisory for details.

Provided and/or discovered by:
The vendor credits Pierre Pronchery.

Original Advisory:
NetBSD-SA2010-003:
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2010-003.txt.asc

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: NetBSD "azalia" and "hdaudio" Drivers Array Indexing Vulnerabilities

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