From patchwork Thu Nov 7 14:22:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benoit Sevens X-Patchwork-Id: 841968 Received: from mail-wr1-f73.google.com (mail-wr1-f73.google.com [209.85.221.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D0282212164 for ; Thu, 7 Nov 2024 14:22:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730989338; cv=none; b=FolsX6n4TF3+/VLlksFkZbkDIMtTnTG4C/JU7fgJo9NAPQUlWIOAV2Ubb3gK1EYpe4r4zC/0x6OhA8jlXurBFYvc2yBQi/UwosBeBWUuBwBwyHAxcXhVBRLwqTta+Wb06J4CyPyad+YstEn+ihhJNpu9e6zY2mrgGeghPsRbxww= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730989338; c=relaxed/simple; bh=+ZlM93Sxvm2YkT6cevxVglWquKgVbpwQmN5TaCYWOLQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=YPDWf4iE5v+asUgE5fq79wQf75SvHMp5aDTCFXQ/wwGU8sBd5FmQwRiRekxWBYqSLUc4iuWr3EHzaDZq7j4NoYxFj4F7mkVg+163W1VFVPnLLJYeLlds59H/j+MISaJr+KcFSLJi69qBBEmV0x3y+r1Ase532wNcHATaYztOWS4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--bsevens.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=NoHiJjUS; arc=none smtp.client-ip=209.85.221.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--bsevens.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="NoHiJjUS" Received: by mail-wr1-f73.google.com with SMTP id ffacd0b85a97d-37d95264eb4so549696f8f.2 for ; Thu, 07 Nov 2024 06:22:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1730989335; x=1731594135; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=lLNHHUDMS13HSatVQBZuAgvLyCkPe7JQ5HpV1uFJ/QA=; b=NoHiJjUSCsQBTeVFMSCnOm7wzzgBvZ4MM7At5n/DOfIvl+qFjn66xKqIeRvKeG7eAD UNtbvwc8r6IcScqNK9qb2dbW/AZtHlgTaXvR19e9wJPTOl+fSpIUgkOp3m9Ayd+7e726 eLkVE0UO1icNPDQ1r82sbuu8zgx0YuzNodb3f0HCVN0hDSJjozBrLhHVq0hma7BguGhH 0xs1aS8NuPWe4grPREEwDeL/FY+foJNvlzd+ZGnmDZ481pk8ZlS7VvasFT8f3XVEevM/ DOjzmH8DKp9HI8GFW2ajgKNjo6L1fPAd/jECxTZdU5WU0Tp1rqkzN5EoAWxQ6GmVO4v6 LJeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730989335; x=1731594135; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=lLNHHUDMS13HSatVQBZuAgvLyCkPe7JQ5HpV1uFJ/QA=; b=KhofuLOv/6t7MrLhqbQLnVjcaFXkYTNgwSa5GyOCYO4HRzWPpYbPysvFj3Ubs4t685 BkT2RaoUOBzkKgPvq7xgePq+aXlK4sfbKSmu0tmueL0Apv/xDXrtE2hKNa0/osQJdVpq LQIp7ANlnQ+1PBgiowqEc3j9MJkuaNVGlh4deKY+nRukioFk167CdEFvylYwRgjhUQpd 9uUvojdGKAJ2kYRMvcQf65q+ycQY+qTR5Kd2QdqsapAk+G9oaM8XdmpRss5Helkw/mgj NtTWitrXR63VBOe2UMnO/dZKzISTKjkYDBFY4TErOBXQwMXHtSfaYM6ZpdNh4cKd5eDy 2kww== X-Gm-Message-State: AOJu0YwFNyxqrmlMZC+se/bLveNSqzr5WuaNuJsajVsFIPd+nwDEFlEE PcjkhdnBR/MJamKM4SaXaa0tgKjysNe+lQczga4kaZOVxqwO4nBWM/HwLEtpssopP0Fc225M6mn IcE+jQg== X-Google-Smtp-Source: AGHT+IEy0onjmObD7oo+mNfcNZhj5w16DGfMqaSsToad00YD15NoLaki9W45PayM+YWWt+QQZrfsbspTx2pM X-Received: from bsevens.c.googlers.com ([fda3:e722:ac3:cc00:28:9cb1:c0a8:22a4]) (user=bsevens job=sendgmr) by 2002:a5d:5010:0:b0:37d:476d:5423 with SMTP id ffacd0b85a97d-381f0973fe8mr68f8f.9.1730989335207; Thu, 07 Nov 2024 06:22:15 -0800 (PST) Date: Thu, 7 Nov 2024 14:22:02 +0000 In-Reply-To: <20241107142204.1182969-1-bsevens@google.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241107142204.1182969-1-bsevens@google.com> X-Mailer: git-send-email 2.47.0.277.g8800431eea-goog Message-ID: <20241107142204.1182969-2-bsevens@google.com> Subject: [PATCH v1 1/2] media: uvcvideo: Skip parsing frames of type UVC_VS_UNDEFINED in uvc_parse_format From: Benoit Sevens To: Laurent Pinchart Cc: linux-media@vger.kernel.org, gregkh@linuxfoundation.org, Benoit Sevens , stable@kernel.org This can lead to out of bounds writes since frames of this type were not taken into account when calculating the size of the frames buffer in uvc_parse_streaming. Fixes: c0efd232929c ("V4L/DVB (8145a): USB Video Class driver") Signed-off-by: Benoit Sevens --- drivers/media/usb/uvc/uvc_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 0fac689c6350..13db0026dc1a 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -371,7 +371,7 @@ static int uvc_parse_format(struct uvc_device *dev, * Parse the frame descriptors. Only uncompressed, MJPEG and frame * based formats have frame descriptors. */ - while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && + while (ftype && buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && buffer[2] == ftype) { unsigned int maxIntervalIndex;