iwlwifi: mvm: avoid use after free for pmsr request

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commit cc4255eff5 upstream.

When a FTM request is aborted, the driver sends the abort command to
the fw and waits for a response. When the response arrives, the driver
calls cfg80211_pmsr_complete() for that request.
However, cfg80211 frees the requested data immediately after sending
the abort command, so this may lead to use after free.

Fix it by clearing the request data in the driver when the abort
command arrives and ignoring the fw notification that will come
afterwards.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Fixes: fc36ffda32 ("iwlwifi: mvm: support FTM initiator")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Avraham Stern 2020-01-31 15:45:27 +02:00 • committed by Greg Kroah-Hartman

parent 63c86b35dc

commit fef27e78e1

1 changed files with 4 additions and 1 deletions

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drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c

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