From patchwork Tue Nov 5 08:54:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vikash Garodia X-Patchwork-Id: 840954 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 smtp.subspace.kernel.org (Postfix) with ESMTPS id 898D11D1E99; Tue, 5 Nov 2024 08:55:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730796954; cv=none; b=naTQvQMZbiyO2RrsXUckvcgxXaMq7kwA8FXD6R29BSmyrwOtIyraOyEQd6T4ek5qsSoOz4ATUZKYONVeEJZaUQutZYbo1o67EJ1WWyolgRrkhlh/Wqhbx4B32aPfKK23B8Js6keIM0cltnM+xnwMVbN9PuyWwizvEJnyqXQ0y6A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730796954; c=relaxed/simple; bh=iGPouEmRZkxRAybaw+1alorRqCjGkzNm0yXj2nsE44M=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=YofQ5F6GTY4jIer72HdU8Xn9jt6P3hWdGb78q0FVPMHKt9ODtZmCyLujc4qsEmoD8xOW0TQ09EKe5tEOpkDLlTCePDJiHKuFppp+pu4dopGD151y3e9dnSMjGYt1SPQ2fRBJ0/fZfrpcCXNwKPnbmcmbmQw5aBRc7CM76ax1aNc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=f9WIva65; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="f9WIva65" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4A4LIiad012119; Tue, 5 Nov 2024 08:55:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= DIlIQ93Yx7bC1OfENFyyT9yNN8jknFcjVFrhZxojJSs=; b=f9WIva65JBvh9V6+ 9EsiYyGWDnNCFtzEriDg2bmrViMSOnSxMLlFK7MfPX2NQyAYTB27pXYkNqwKuic4 qSMdJGT+H1mVN51N2dZ123iwXElrfRn5zToxK/ScnXE4mFYK/5IEcVW5fOqw+tmt n8DeN7UmDMuoWrGov1bsMReKaVY7hE3jPwrWeDKjmWcwh+7k8zwdky6kDZ3pJx1U QsOQeSxcSKqEjk09aKoK4S2e96WCyycBHwhdycY9mhjsjhGsjV0Miqh9CFoSLRRa ZS/1pMkgK0zb05lb4na2xA5ZAOCXhSwEPlOFnzxkVsPzdSG/C2qp6EDclsSqPZaB vANRyQ== Received: from nasanppmta02.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 42nd11y08e-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Nov 2024 08:55:48 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4A58tlU1029707 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 5 Nov 2024 08:55:47 GMT Received: from hu-vgarodia-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 15.2.1544.9; Tue, 5 Nov 2024 00:55:45 -0800 From: Vikash Garodia Date: Tue, 5 Nov 2024 14:24:57 +0530 Subject: [PATCH 4/4] media: venus: hfi: add a check to handle OOB in sfr region Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20241105-venus_oob-v1-4-8d4feedfe2bb@quicinc.com> References: <20241105-venus_oob-v1-0-8d4feedfe2bb@quicinc.com> In-Reply-To: <20241105-venus_oob-v1-0-8d4feedfe2bb@quicinc.com> To: Stanimir Varbanov , Bryan O'Donoghue , Mauro Carvalho Chehab CC: , , , Vikash Garodia , X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1730796934; l=1440; i=quic_vgarodia@quicinc.com; s=20241104; h=from:subject:message-id; bh=iGPouEmRZkxRAybaw+1alorRqCjGkzNm0yXj2nsE44M=; b=rLbc6Bfe3C74h4smkOpubA7BtYi2kaq5os4+rs0TiJWGM8MMkseIBgcRdyRqXTK/6qns2ab7L nWheDsumLi1Dxoo1CMX2n00VGojrfrt0+OTPvnFItm5yMqrnTJD5SLV X-Developer-Key: i=quic_vgarodia@quicinc.com; a=ed25519; pk=LY9Eqp4KiHWxzGNKGHbwRFEJOfRCSzG/rxQNmvZvaKE= 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: 3S6C3G7qV9mkRoP5yUzZ8KFy-QCtXGNX X-Proofpoint-ORIG-GUID: 3S6C3G7qV9mkRoP5yUzZ8KFy-QCtXGNX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=760 mlxscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 priorityscore=1501 impostorscore=0 spamscore=0 bulkscore=0 suspectscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411050063 sfr->buf_size is in shared memory and can be modified by malicious user. OOB write is possible when the size is made higher than actual sfr data buffer. Cc: stable@vger.kernel.org Fixes: d96d3f30c0f2 ("[media] media: venus: hfi: add Venus HFI files") Signed-off-by: Vikash Garodia --- drivers/media/platform/qcom/venus/hfi_venus.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c b/drivers/media/platform/qcom/venus/hfi_venus.c index 50d92214190d88eff273a5ba3f95486f758bcc05..c19d6bf686d0f31c6a2f551de3f7eb08031bde85 100644 --- a/drivers/media/platform/qcom/venus/hfi_venus.c +++ b/drivers/media/platform/qcom/venus/hfi_venus.c @@ -1041,18 +1041,23 @@ static void venus_sfr_print(struct venus_hfi_device *hdev) { struct device *dev = hdev->core->dev; struct hfi_sfr *sfr = hdev->sfr.kva; + u32 size; void *p; if (!sfr) return; - p = memchr(sfr->data, '\0', sfr->buf_size); + size = sfr->buf_size; + if (size > ALIGNED_SFR_SIZE) + return; + + p = memchr(sfr->data, '\0', size); /* * SFR isn't guaranteed to be NULL terminated since SYS_ERROR indicates * that Venus is in the process of crashing. */ if (!p) - sfr->data[sfr->buf_size - 1] = '\0'; + sfr->data[size - 1] = '\0'; dev_err_ratelimited(dev, "SFR message from FW: %s\n", sfr->data); }