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NetBSD Audio Drivers ioctl Denial of Service Vulnerability
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Secunia Advisory:
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SA15874
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Release Date:
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2005-07-01
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Last Update:
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2006-02-01
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Popularity:
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7,349 views
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Critical:
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Not critical
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Impact:
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DoS
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| OS: | NetBSD 1.x
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| | CVE reference: | CVE-2005-2134
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Description:
A vulnerability has been reported in NetBSD, which can be exploited by malicious, local users to cause a DoS (Denial of Service).
The vulnerability is caused due to a division by zero error in certain audio drivers when processing an "ioctl()" call that contains both the "unpaused" command and the block-size change information.
Successful exploitation crashes the kernel, but requires access to the audio device.
The vulnerability has been reported in the "clcs" and "emuxki" drivers for the Cirrus Logic CS4280/CS4281, SB Live!, and SB PC 512 hardware.
Solution:
The vulnerability has been fixed in the following versions:
* NetBSD-current (June 12, 2005)
* NetBSD-1.6 branch (June 17, 2005, 1.6.3 will include the fix)
Provided and/or discovered by:
The vendor credits Ignatios Souvatzis and Yamamoto Takashi.
Changelog:
2006-02-01: Added CVE reference.
Original Advisory:
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-002.txt.asc
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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