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Vigil@nce - Linux kernel: information disclosure via yam_ioctl

January 2014 by Vigil@nce

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

SYNTHESIS OF THE VULNERABILITY

A local attacker can use an ioctl, in order to read bytes coming
from the Linux kernel memory, in order to obtain sensitive
information.

 Impacted products: Linux
 Severity: 1/4
 Creation date: 14/01/2014

DESCRIPTION OF THE VULNERABILITY

The yam_ioctl() function implements ioctls for the
drivers/net/hamradio/yam.c driver.

However, it does not initialize all fields of the structure which
is returned to the user.

A local attacker can therefore use an ioctl, in order to read
bytes coming from the Linux kernel memory, in order to obtain
sensitive information.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Linux-kernel-information-disclosure-via-yam-ioctl-14079


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