From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AAACEC43217 for ; Thu, 13 Oct 2022 01:12:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230470AbiJMBMs (ORCPT ); Wed, 12 Oct 2022 21:12:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230331AbiJMBMa (ORCPT ); Wed, 12 Oct 2022 21:12:30 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7264820F6D; Wed, 12 Oct 2022 18:11:39 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 825EBB81CE0; Thu, 13 Oct 2022 00:22:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B5C1C43470; Thu, 13 Oct 2022 00:22:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1665620531; bh=PyVuP224LTfOgKeY7PGhWDcswJIc+RIZ/ujbhn1tRm4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Apuzfq2o3dVGAL/h9ff872ADhhoXCXnopvUAR3BHZCxNdZAl9GNp+otd4UdDY9vrB TiFfLifCP8117RMNzsdogxQTPMasontqmFqKSp8Q4VnsjB9r2kxn7VV9ZXeU3nU7zZ CI+P0SczssHSjOuuj5Gp/Y415i/stl4Q03klY/5CjI6L5jYbJOclJORyIhoCFGQVYG bzMmG2qC82hJ3ys/WSB8SbR30FG9iEhbEQVKtBvTjDvpwdfeM+WwWboUPKzGSKXdAo 3dMxoBuGjHoF0uwyN+ItMakv50Fa6/ZzADhgERJ0/SkcyGyedbkZvvyY4xJoV0v+R4 eP9LMxiSc2ubQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wei Yongjun , Michael Hennerich , Sebastian Reichel , Sasha Levin , Michael.Hennerich@analog.com, sre@kernel.org, linux-pm@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 13/47] power: supply: adp5061: fix out-of-bounds read in adp5061_get_chg_type() Date: Wed, 12 Oct 2022 20:20:48 -0400 Message-Id: <20221013002124.1894077-13-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221013002124.1894077-1-sashal@kernel.org> References: <20221013002124.1894077-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wei Yongjun [ Upstream commit 9d47e01b9d807808224347935562f7043a358054 ] ADP5061_CHG_STATUS_1_CHG_STATUS is masked with 0x07, which means a length of 8, but adp5061_chg_type array size is 4, may end up reading 4 elements beyond the end of the adp5061_chg_type[] array. Signed-off-by: Wei Yongjun Acked-by: Michael Hennerich Signed-off-by: Sebastian Reichel Signed-off-by: Sasha Levin --- drivers/power/supply/adp5061.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/power/supply/adp5061.c b/drivers/power/supply/adp5061.c index 003557043ab3..daee1161c305 100644 --- a/drivers/power/supply/adp5061.c +++ b/drivers/power/supply/adp5061.c @@ -427,11 +427,11 @@ static int adp5061_get_chg_type(struct adp5061_state *st, if (ret < 0) return ret; - chg_type = adp5061_chg_type[ADP5061_CHG_STATUS_1_CHG_STATUS(status1)]; - if (chg_type > ADP5061_CHG_FAST_CV) + chg_type = ADP5061_CHG_STATUS_1_CHG_STATUS(status1); + if (chg_type >= ARRAY_SIZE(adp5061_chg_type)) val->intval = POWER_SUPPLY_STATUS_UNKNOWN; else - val->intval = chg_type; + val->intval = adp5061_chg_type[chg_type]; return ret; } -- 2.35.1