Vigil@nce - Linux kernel: NULL pointer dereference via inet_autobind
December 2015 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
A local attacker can force a NULL pointer to be dereferenced in
the inet_autobind() function of the Linux kernel, in order to
trigger a denial of service.
Impacted products: Debian, Fedora, Linux.
Severity: 1/4.
Creation date: 14/12/2015.
DESCRIPTION OF THE VULNERABILITY
The Linux kernel supports low level sockets of type SOCK_RAW.
However, using a SOCK_RAW socket, of AF_INET6 (IPv6) family, with
an invalid protocol, forces the inet_autobind() function to use an
NULL function pointer.
A local attacker can therefore force a NULL pointer to be
dereferenced in the inet_autobind() function of the 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-inet-autobind-18508