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R. Silva" Cc: Francesco Dolcini , Kalle Valo , Andy Shevchenko , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: Re: [PATCH][next] wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_cmd_802_11_scan_ext() Message-ID: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Aug 21, 2024 at 03:23:51PM -0600, Gustavo A. R. Silva wrote: > Replace one-element array with a flexible-array member in > `struct host_cmd_ds_802_11_scan_ext`. > > With this, fix the following warning: > > elo 16 17:51:58 surfacebook kernel: ------------[ cut here ]------------ > elo 16 17:51:58 surfacebook kernel: memcpy: detected field-spanning write (size 243) of single field "ext_scan->tlv_buffer" at drivers/net/wireless/marvell/mwifiex/scan.c:2239 (size 1) > elo 16 17:51:58 surfacebook kernel: WARNING: CPU: 0 PID: 498 at drivers/net/wireless/marvell/mwifiex/scan.c:2239 mwifiex_cmd_802_11_scan_ext+0x83/0x90 [mwifiex] > > Reported-by: Andy Shevchenko > Closes: https://lore.kernel.org/linux-hardening/ZsZNgfnEwOcPdCly@black.fi.intel.com/ > Signed-off-by: Gustavo A. R. Silva Acked-by: Brian Norris