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Johannes Berg ff05d4b45d wifi: mac80211: fix MBSSID parsing use-after-free 
When we parse a multi-BSSID element, we might point some
element pointers into the allocated nontransmitted_profile.
However, we free this before returning, causing UAF when the
relevant pointers in the parsed elements are accessed.

Fix this by not allocating the scratch buffer separately but
as part of the returned structure instead, that way, there
are no lifetime issues with it.

The scratch buffer introduction as part of the returned data
here is taken from MLO feature work done by Ilan.

This fixes CVE-2022-42719.

Fixes: 5023b14cf4 ("mac80211: support profile split between elements")
Co-developed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-10-10 09:50:23 +02:00
arch Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
block STATX_DIOALIGN for 6.1 2022-10-03 20:33:41 -07:00
certs certs: make system keyring depend on built-in x509 parser 2022-09-24 04:31:18 +09:00
crypto crypto: blake2b: effectively disable frame size warning 2022-08-10 17:59:11 -07:00
Documentation docs: networking: phy: add missing space 2022-10-05 20:32:39 -07:00
drivers octeontx2-pf: mcs: fix possible memory leak in otx2_probe() 2022-10-10 08:39:39 +01:00
fs Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
include net: ieee802154: return -EINVAL for unknown addr type 2022-10-07 08:42:00 +01:00
init Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
io_uring io_uring-6.0-2022-09-29 2022-09-30 09:28:39 -07:00
ipc Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
kernel Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
lib Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm One MAINTAINERS update, two MM fixes, both cc:stable 2022-10-01 09:13:29 -07:00
net wifi: mac80211: fix MBSSID parsing use-after-free 2022-10-10 09:50:23 +02:00
rust Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
samples Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
scripts Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
security Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
sound ALSA: hda: intel-dsp-config: add missing RaptorLake PCI IDs 2022-09-22 13:50:33 +02:00
tools ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference 2022-10-07 08:47:08 +01:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device() 2022-08-19 04:05:43 -04:00
.clang-format PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
.mailmap Qualcomm ARM64 DTS fixes for 6.0 2022-09-23 16:44:37 +02:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS drm for 5.20/6.0 2022-08-03 19:52:08 -07:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: add Jan as SMC maintainer 2022-10-07 08:40:15 +01:00
Makefile hardening updates for v6.1-rc1 2022-10-03 17:24:22 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.