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Vigil@nce - Linux kernel: buffer overflow via caiaq

February 2011 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/

SYNTHESIS OF THE VULNERABILITY

An attacker can insert a USB device with a long name, in order to
create an overflow in caiaq, leading to a denial of service or to
code execution.

Severity: 1/4

Creation date: 16/02/2011

IMPACTED PRODUCTS

 Linux kernel

DESCRIPTION OF THE VULNERABILITY

The sound/usb/caiaq directory implements the support of USB
devices from the Native Instruments company.

The snd_usb_caiaq_audio_init() and snd_usb_caiaq_midi_init()
functions copy the name of the USB device in a 80 bytes array.
However, if the name provided by the USB device is longer, a
buffer overflow occurs.

An attacker can therefore insert a USB device with a long name, in
order to create an overflow in caiaq, leading to a denial of
service or to code execution.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Linux-kernel-buffer-overflow-via-caiaq-10373


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