From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 EA0653A7827; Wed, 7 Jan 2026 17:36:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767807403; cv=none; b=WXpiDnPx1nfEo0o/+C0/EgPksceMONQ9ShjxPV9k9CRJdlD8ts72LJO6x1vjbPDPpSnjOONzQ3hfqnuH9Exg0r57OJRpWZYkGMCQc36kPUCYHqoqkjAr/sFfxVi5KqZOL31WgoAQTdkoZAiRi8YpaJGgKqRypwG5OPezSQffRHU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767807403; c=relaxed/simple; bh=q1d+oMNFKirU07Z6RCokzxX/iZ8NMhrsYRodJ8aRsn4=; h=From:To:Cc:In-Reply-To:References:Subject:Message-Id:Date: MIME-Version:Content-Type; b=s4qAqs7qjgVUijU+F0vmY15OtpSRuNu6CscL3L+Lb9H5ng6fBdnM/ZIP+Ggpti5ZB90+u9dzEf0VlwXigkNN2x54aT2H1/w0M14kcJ0pB0ZXdb74mCfbMLc2eVM83eAvwAkcjLJg5U/k947ia6b7xL7dqUrOCKjI3XwBdKWLlms= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cnYdDFOq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cnYdDFOq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92BE0C19423; Wed, 7 Jan 2026 17:36:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767807402; bh=q1d+oMNFKirU07Z6RCokzxX/iZ8NMhrsYRodJ8aRsn4=; h=From:To:Cc:In-Reply-To:References:Subject:Date:From; b=cnYdDFOqhPiC2WJQ0M5kr5VBwwixHi/W3/PTOrIYTQKQg8OhMTo+3kyW37HacZc4m 7F+u9C1WjY30vZk9krbc/BE9dLiWvz5MwazioMpaep0oH7/HA1Tn5fE/wThcWLXHny qRdt1xxelaYIK/14qrSfZl7vHVqi1cILyz4uNI+wsCRtG4blJfPvNfN63agSVPxRtl e1av6G/oDp8rBiJwtFEWGthHHoGrNdLcBhQwWSP4IIfmyZuI+ZbE/nihykntQ6eVEV 3ryoxkfWHd34wiBBjUBZ9QEdO4vfB6/bvUDtAGirdB2vYy8aLNGziK0FHUl6KWv2rH YyTJlzvPcObmg== From: Benjamin Tissoires To: jikos@kernel.org, Kwok Kin Ming Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20251231181830.232239-1-kenkinming2002@gmail.com> References: <20251231181830.232239-1-kenkinming2002@gmail.com> Subject: Re: [PATCH] HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report() Message-Id: <176780740132.3457665.6740398736314208799.b4-ty@kernel.org> Date: Wed, 07 Jan 2026 18:36:41 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.15-dev On Thu, 01 Jan 2026 02:18:26 +0800, Kwok Kin Ming wrote: > `i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data > into `ihid->rawbuf`. > > The former can come from the userspace in the hidraw driver and is only > bounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set > `max_buffer_size` field of `struct hid_ll_driver` which we do not). > > [...] Applied to hid/hid.git (for-6.19/upstream-fixes), thanks! [1/1] HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report() https://git.kernel.org/hid/hid/c/2497ff38c530 Cheers, -- Benjamin Tissoires