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Filename Latest commit message Latest commit date
Takashi Iwai e5c27c2ae2 media: dvb-usb: Fix use-after-free access 
commit c49206786ee252f28b7d4d155d1fff96f145a05d upstream.

dvb_usb_device_init() copies the properties to the own data, so that
the callers can release the original properties later (as done in the
commit 299c7007e9 ("media: dw2102: Fix memleak on sequence of
probes")).  However, it also stores dev->desc pointer that is a
reference to the original properties data.  Since dev->desc is
referred later, it may result in use-after-free, in the worst case,
leading to a kernel Oops as reported.

This patch addresses the problem by allocating and copying the
properties at first, then get the desc from the copied properties.

Reported-and-tested-by: Stefan Seyfried <seife+kernel@b1-systems.com>
BugLink: http://bugzilla.opensuse.org/show_bug.cgi?id=1181104

Reviewed-by: Robert Foss <robert.foss@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-11 14:04:17 +02:00
arch x86/cpu: Initialize MSR_TSC_AUX if RDTSCP *or* RDPID is supported 2021-05-11 14:04:16 +02:00
block
certs
crypto crypto: rng - fix crypto_rng_reset() refcounting when !CRYPTO_STATS 2021-05-11 14:04:15 +02:00
Documentation
drivers media: dvb-usb: Fix use-after-free access 2021-05-11 14:04:17 +02:00
fs ext4: fix error code in ext4_commit_super 2021-05-11 14:04:16 +02:00
include Fix misc new gcc warnings 2021-05-11 14:04:16 +02:00
init
ipc
kernel kbuild: update config_data.gz only when the content of .config is changed 2021-05-11 14:04:16 +02:00
lib
LICENSES
mm
net Fix misc new gcc warnings 2021-05-11 14:04:16 +02:00
samples
scripts
security security: commoncap: fix -Wstringop-overread warning 2021-05-11 14:04:16 +02:00
sound
tools
usr
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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.

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.