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Johannes Berg 8f033d2bec wifi: cfg80211/mac80211: reject bad MBSSID elements 
Per spec, the maximum value for the MaxBSSID ('n') indicator is 8,
and the minimum is 1 since a multiple BSSID set with just one BSSID
doesn't make sense (the # of BSSIDs is limited by 2^n).

Limit this in the parsing in both cfg80211 and mac80211, rejecting
any elements with an invalid value.

This fixes potentially bad shifts in the processing of these inside
the cfg80211_gen_new_bssid() function later.

I found this during the investigation of CVE-2022-41674 fixed by the
previous patch.

Fixes: 0b8fb8235b ("cfg80211: Parsing of Multiple BSSID information in scanning")
Fixes: 78ac51f815 ("mac80211: support multi-bssid")
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-10-10 09:50:15 +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: cfg80211/mac80211: reject bad MBSSID elements 2022-10-10 09:50:15 +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
.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.