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Stefano Garzarella 2cb7c756f6 vsock/virtio: discard packets if the transport changes
If the socket has been de-assigned or assigned to another transport,
we must discard any packets received because they are not expected
and would cause issues when we access vsk->transport.

A possible scenario is described by Hyunwoo Kim in the attached link,
where after a first connect() interrupted by a signal, and a second
connect() failed, we can find `vsk->transport` at NULL, leading to a
NULL pointer dereference.

Fixes: c0cfa2d8a7 ("vsock: add multi-transports support")
Cc: stable@vger.kernel.org
Reported-by: Hyunwoo Kim <v4bel@theori.io>
Reported-by: Wongi Lee <qwerty@theori.io>
Closes: https://lore.kernel.org/netdev/Z2LvdTTQR7dBmPb5@v4bel-B760M-AORUS-ELITE-AX/
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Hyunwoo Kim <v4bel@theori.io>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-01-14 12:29:36 +01:00
Documentation Including fixes from netfilter, Bluetooth and WPAN. 2025-01-09 12:40:58 -08:00
LICENSES
arch
block
certs
crypto
drivers pfcp: Destroy device along with udp socket's netns dismantle. 2025-01-14 11:20:04 +01:00
fs for-6.13-rc6-tag 2025-01-09 10:16:45 -08:00
include xsk: Bring back busy polling support 2025-01-10 18:07:56 -08:00
init
io_uring for-6.13-rc6-tag 2025-01-09 10:16:45 -08:00
ipc
kernel
lib
mm
net vsock/virtio: discard packets if the transport changes 2025-01-14 12:29:36 +01:00
rust
samples
scripts
security
sound
tools Including fixes from netfilter, Bluetooth and WPAN. 2025-01-09 12:40:58 -08:00
usr
virt
.clang-format
.clippy.toml
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
.rustfmt.toml
COPYING
CREDITS MAINTAINERS: remove Andy Gospodarek from bonding 2025-01-09 08:30:01 -08:00
Kbuild
Kconfig
MAINTAINERS Including fixes from netfilter, Bluetooth and WPAN. 2025-01-09 12:40:58 -08:00
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 reStructuredText markup notation.

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.