From patchwork Thu May 11 11:25:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ravulapati Vishnu Vardhan Rao X-Patchwork-Id: 13237790 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 10F8DC7EE22 for ; Thu, 11 May 2023 11:27:24 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 40266822; Thu, 11 May 2023 13:26:32 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 40266822 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1683804442; bh=7ceo9rEx5DWSOqfq2GgQmHg5yNoSKjl9et2SQ/6cC7w=; h=From:To:CC:Subject:Date:List-Id:List-Archive:List-Help:List-Owner: List-Post:List-Subscribe:List-Unsubscribe:From; b=ICEmHDvibq/fP/67i7DTZgIFZbeXN52QiLCdWYaqR/3BPaB0GNtyT9Wr0TXsdM783 WBxASrRs78J9LfTbAEziS/FR9JfGnQZXpUiPQwNT/Ypr7ea+f+P0zt1P2L2iLEvHKR qYbTDmoL16GMpsrqae1Sgan1DYCL14G9Ddcs7H2g= Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id A8544F8032D; Thu, 11 May 2023 13:26:05 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 73BD4F8032D; Thu, 11 May 2023 13:26:02 +0200 (CEST) Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id C610DF802E8 for ; Thu, 11 May 2023 13:25:56 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz C610DF802E8 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=quicinc.com header.i=@quicinc.com header.a=rsa-sha256 header.s=qcppdkim1 header.b=UhbggxeZ Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 34B9SGgS004550; Thu, 11 May 2023 11:25:54 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=qcppdkim1; bh=grbvt0XM5HD4zGTzp5d1D7puYVYO1aksB2M1JqLfzO4=; b=UhbggxeZbTUeeaijXWgOJ27Q1LuBikTcymAJ6D7oIgmUokQZsLlz5G57r8g+mFotisWx qYHiWW1zlpM8eEkE8LYcDM4sOFkUdqm03yw+K12GlMMEpzq0qUmU4y/T9w+SklHfV2I7 a+htaRcm1iXBmKkF2Jmv7SVltVUhqJ0SAQFHyazB2v2DCe1lbDUrIOji2EkNZ4BCGkG2 5pflzYoSVKiq6sHkiSYTC5Fl3k3MSjWGJX4DgirGfZ9je6sWP0XsAlVyaZx6CtYvbgXb XlK1mC5drHM/V4VbHiAH/hnJofIy3PiC3m+QfIAvUkGEWt3d0L22+nb+prOBIfwBsK1N Fg== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3qgv1nrhpf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 11 May 2023 11:25:54 +0000 Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 34BBPrvE002879 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 11 May 2023 11:25:53 GMT Received: from hu-visr-hyd.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Thu, 11 May 2023 04:25:50 -0700 From: Ravulapati Vishnu Vardhan Rao To: CC: Srinivas Kandagatla , Banajit Goswami , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , "moderated list:QCOM AUDIO (ASoC) DRIVERS" , open list Subject: [PATCH v2] ASoC:codecs: lpass: Fix for KASAN use_after_free out of bounds Date: Thu, 11 May 2023 16:55:32 +0530 Message-ID: <20230511112532.16106-1-quic_visr@quicinc.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: O2MUXd_E8MM0SNvXnho7Y0goRjqAiDs- X-Proofpoint-ORIG-GUID: O2MUXd_E8MM0SNvXnho7Y0goRjqAiDs- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-11_08,2023-05-05_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=680 clxscore=1015 priorityscore=1501 lowpriorityscore=0 suspectscore=0 phishscore=0 impostorscore=0 bulkscore=0 spamscore=0 malwarescore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305110097 Message-ID-Hash: VZXLBW65MSJINC7ADJ65UNLUGERQSQV7 X-Message-ID-Hash: VZXLBW65MSJINC7ADJ65UNLUGERQSQV7 X-MailFrom: quic_visr@quicinc.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: When we run syzkaller we get below Out of Bounds error. "KASAN: slab-out-of-bounds Read in regcache_flat_read" Below is the backtrace of the issue: BUG: KASAN: slab-out-of-bounds in regcache_flat_read+0x10c/0x110 Read of size 4 at addr ffffff8088fbf714 by task syz-executor.4/14144 CPU: 6 PID: 14144 Comm: syz-executor.4 Tainted: G W Hardware name: Qualcomm Technologies, Inc. sc7280 CRD platform (rev5+) (DT) Call trace: dump_backtrace+0x0/0x4ec show_stack+0x34/0x50 dump_stack_lvl+0xdc/0x11c print_address_description+0x30/0x2d8 kasan_report+0x178/0x1e4 __asan_report_load4_noabort+0x44/0x50 regcache_flat_read+0x10c/0x110 regcache_read+0xf8/0x5a0 _regmap_read+0x45c/0x86c _regmap_update_bits+0x128/0x290 regmap_update_bits_base+0xc0/0x15c snd_soc_component_update_bits+0xa8/0x22c snd_soc_component_write_field+0x68/0xd4 tx_macro_put_dec_enum+0x1d0/0x268 snd_ctl_elem_write+0x288/0x474 By Error checking and checking valid values issue gets rectifies. Signed-off-by: Ravulapati Vishnu Vardhan Rao --- sound/soc/codecs/lpass-tx-macro.c | 5 +++++ 1 file changed, 5 insertions(+) Changes Since v1: - Check value with enum item value getting from control. - Removing of previously added code which is unwanted as already we get out with -EINVAL if value is out of bound. diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c index da6fcf7f0991..de978c3d70b7 100644 --- a/sound/soc/codecs/lpass-tx-macro.c +++ b/sound/soc/codecs/lpass-tx-macro.c @@ -746,6 +746,8 @@ static int tx_macro_put_dec_enum(struct snd_kcontrol *kcontrol, struct tx_macro *tx = snd_soc_component_get_drvdata(component); val = ucontrol->value.enumerated.item[0]; + if (val >= e->items) + return -EINVAL; switch (e->reg) { case CDC_TX_INP_MUX_ADC_MUX0_CFG0: @@ -772,6 +774,9 @@ static int tx_macro_put_dec_enum(struct snd_kcontrol *kcontrol, case CDC_TX_INP_MUX_ADC_MUX7_CFG0: mic_sel_reg = CDC_TX7_TX_PATH_CFG0; break; + default: + dev_err(component->dev, "Error in configuration!!\n"); + return -EINVAL; } if (val != 0) {