Subject: Re: [PATCH] b43: Avoid possible double calls to b43_one_core_detach()

From: Kalle Valo <[email-masked]>
Date: Tue, 28 May 2019 12:43:55 +0000 (UTC)

Jia-Ju Bai <[email-masked]> wrote:

> In b43_request_firmware(), when ieee80211_register_hw() fails,
> b43_one_core_detach() is called. In b43_bcma_remove() and
> b43_ssb_remove(), b43_one_core_detach() is called again. In this case, 
> null-pointer dereferences and double-free problems can occur when 
> the driver is removed.
> 
> To fix this bug, the call to b43_one_core_detach() in
> b43_request_firmware() is deleted.
> 
> This bug is found by a runtime fuzzing tool named FIZZER written by us.
> 
> Signed-off-by: Jia-Ju Bai <[email-masked]>

Patch applied to wireless-drivers-next.git, thanks.

ec2e93cf1910 b43: Avoid possible double calls to b43_one_core_detach()

-- 
https://patchwork.kernel.org/patch/10929623/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches