Zhao Li ff558072d1 wifi: mac80211: validate individual TWT params before driver setup
[ Upstream commit 0502d5077e ]

ieee80211_process_rx_twt_action() only partially validates a received
S1G TWT setup frame before queueing it.

An individual agreement can therefore reach ieee80211_s1g_rx_twt_setup()
with twt->length too short for the full struct ieee80211_twt_params.

The individual path passes twt to drv_add_twt_setup(). Both the tracepoint
and the driver callback consume the complete parameters block, not merely
req_type. Do not pass a short individual agreement to the driver.
Broadcast agreements remain unchanged because they are rejected locally
after accessing only req_type.

Fixes: f5a4c24e68 ("mac80211: introduce individual TWT support in AP mode")
Assisted-by: Codex:gpt-5
Assisted-by: Claude:opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260723010928.76551-1-enderaoelyther@gmail.com
[edit commit message to not overclaim lack of validation nor
 understate driver impact]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-08-09 20:21:48 +02:00
2026-05-23 13:03:09 +02:00
2026-08-03 11:15:40 +02:00
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2026-05-23 13:03:09 +02:00
2026-08-07 08:10:47 +02:00
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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.
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