From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794063018; b=5BJ+6RZhCiUErkdEJJVdp1HM7NG5Zn8Q5Eo97T+b0rnGJAl89qdEHYJJu9WGDY8bcAd4 bnwYTR9BllVxZct+O1woIn4iYCd9NXi0MIa0JXXEPTg6AGhfK42UGpZdWjOx023EVdO7v 1sLtDYi68enz3pcoCDugNx1cG9h42jh+a51RlYVwGXBz/SYjC2R9AWzB0ycC9rG94DFZa oc+F+TJAHCTDS258KfbUBFoiLK3MJuXwxofmzdPOF2odmPOe+3F5yIjBVxq2Pz7Z3wUgm at1B7Pa+pvhnbBA6SF0/dbjoKDAyLWCVd0MCT+gdyicZfd+ihrj0Ia5aY+Pa2LFaO5g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063018; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=rhyRnYdjCr7s4bp2JtNZc3W/SSnw/4RxAVmcX4y0hB0=; b=RdcQ10A47+AQdoX8DGLQ+wIQQKBb2n55tJY/X0zAeZwG4ArjKiBYRQ6YWdKoqwj51Rjt LSVEIvus+LwF6xyPp7lB9zc9/gZTSgYQ1/suDHUirUOdsqOn1PDiT7o/sZ+ZsEhQtoKor u4Us6A72cTtv+4uaFK5hp7j6br7sfMaNUTUn4qavkX7QoDlI64w1UCL+bI4BMkAqpj9SZ i3khbal/NHURK0ZN7VqhlDALfoVXFWIz5jxX4paKxA3Lo4SAxcMTs2Zh5gi/y5px12F4f DAzPuTkFmEUYaPahrKdwFVKo1Ow/zHMnF/20Fp68pjOzBN4SHnEqAnBRXnnOfZWcDjw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=jI+nb4sy; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5C0D0606D801; Sat, 7 Nov 2026 14:50:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=jI+nb4sy Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB42D1F0089F; Sat, 7 Nov 2026 14:50:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063017; bh=rhyRnYdjCr7s4bp2JtNZc3W/SSnw/4RxAVmcX4y0hB0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=jI+nb4sy4ul9twZ7BeUO5JCzn+Z1DvN+5v8dkkcXkN+NROrdGnjBqR1EL9zO5FI6g QBChWUcvTx3CIIvMOhsMsTUbEXf0ZoTTDPgAvakAmR2ub0SrZM+4Rf/1CYOJ6iNtz4 GdAsSXxkBAmSETqMkUArJ1o/4XBnuZZOfy+oixWs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiale Yao , Jonathan Cameron , Sasha Levin Subject: [PATCH 6.18 267/869] iio: dac: ad5755: validate SPI match data Date: Sat, 7 Nov 2026 08:49:09 -0500 Message-ID: <20261107134900.761950380@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134852.069646174@linuxfoundation.org> References: <20261107134852.069646174@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiale Yao [ Upstream commit 85e2c8ca7ac9e39a61e7fb18728918f6e966f439 ] A device bound through driver_override need not match an entry in the driver tables. In that case spi_get_device_match_data() returns NULL, but ad5755_probe() stores and later dereferences the result. Validate the match data before it is used. Fixes: 62d3fb9dcc09 ("iio: dac: ad5755: make use of of_device_id table") Signed-off-by: Jiale Yao Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/iio/dac/ad5755.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c index d0e5f35462b1b..ce188c5a9ad15 100644 --- a/drivers/iio/dac/ad5755.c +++ b/drivers/iio/dac/ad5755.c @@ -819,6 +819,9 @@ static int ad5755_probe(struct spi_device *spi) spi_set_drvdata(spi, indio_dev); st->chip_info = spi_get_device_match_data(spi); + if (!st->chip_info) + return -ENODATA; + st->spi = spi; st->pwr_down = 0xf; -- 2.53.0