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SYNTHESIS OF THE VULNERABILITY

An attacker can force a NULL pointer to be dereferenced via a
VxLAN interface of Linux kernel, in order to trigger a denial of
service.

Impacted products: Linux, RHEL

Severity: 1/4

Creation date: 10/09/2014

DESCRIPTION OF THE VULNERABILITY

The include/linux/netdevice.h file of the Linux kernel defines
several macros to log errror messages with printk().

However, these macros do not check if the VxLAN device name is
NULL, before using it.

An attacker can therefore force a NULL pointer to be dereferenced
via a VxLAN interface of Linux kernel, in order to trigger a
denial of service.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Linux-kernel-NULL-pointer-dereference-via-VxLAN-15316