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Guillaume Nault 3e1bc8bf97 l2tp: prevent pppol2tp_connect() from creating kernel sockets 
If 'fd' is negative, l2tp_tunnel_create() creates a tunnel socket using
the configuration passed in 'tcfg'. Currently, pppol2tp_connect() sets
the relevant fields to zero, tricking l2tp_tunnel_create() into setting
up an unusable kernel socket.

We can't set 'tcfg' with the required fields because there's no way to
get them from the current connect() parameters. So let's restrict
kernel sockets creation to the netlink API, which is the original use
case.

Fixes: 789a4a2c61 ("l2tp: Add support for static unmanaged L2TPv3 tunnels")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-14 17:10:19 -07:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-10 19:25:23 -07:00
block
certs
crypto
Documentation RTC for 4.18 2018-06-10 16:13:24 -07:00
drivers net: emaclite: Remove xemaclite_mdio_setup return check 2018-06-14 17:08:03 -07:00
firmware
fs This pull request contains updates for both UBI and UBIFS: 2018-06-10 15:52:09 -07:00
include sctp: define sctp_packet_gso_append to build GSO frames 2018-06-14 10:25:53 -07:00
init
ipc
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2018-06-11 17:37:03 -07:00
lib
LICENSES
mm
net l2tp: prevent pppol2tp_connect() from creating kernel sockets 2018-06-14 17:10:19 -07:00
samples
scripts
security
sound
tools tc-testing: ife: fix wrong teardown command in test b7b8 2018-06-12 15:32:25 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
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MAINTAINERS SCSI misc on 20180610 2018-06-10 13:01:12 -07:00
Makefile
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.