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Thu, 13 Nov 2025 08:46:20 +0000 Message-ID: Date: Thu, 13 Nov 2025 09:46:12 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] ASoC: Intel: avs: Fix potential buffer overflow by snprintf() To: Greg KH CC: , , , , , , , , , , , , , , , , , References: <20251112181851.13450-1-hariconscious@gmail.com> <2025111239-sturdily-entire-d281@gregkh> Content-Language: en-US From: Cezary Rojewski In-Reply-To: <2025111239-sturdily-entire-d281@gregkh> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: VI1PR09CA0140.eurprd09.prod.outlook.com (2603:10a6:803:12c::24) To SN7PR11MB8283.namprd11.prod.outlook.com (2603:10b6:806:26c::16) Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN7PR11MB8283:EE_|IA3PR11MB9327:EE_ X-MS-Office365-Filtering-Correlation-Id: 5d9a29bb-970f-4459-a569-08de22911e03 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|7416014|376014; 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The problem will never occur in production-scenario given the AudioDSP firmware limitation - max ~10 probe-point entries so, the built string will be far away from 4K_SZ bytes. If the verdict is: ignore the recommendation as the problem is unrealistic, I'm OK with that. Typically though I'd prefer to stick to the recommendations. > >> This patch replaces it with a safer version, scnprintf() for papering >> over such a potential issue. > > Don't "paper over", actually fix real things. > > >> Link: https://github.com/KSPP/linux/issues/105 >> 'Fixes: 5a565ba23abe ("ASoC: Intel: avs: Probing and firmware tracing >> over debugfs")' > > No, this is not a "fix". The patch isn't worded well, that's clear. While the patch is an outcome of static-analysis, isn't it good to have 'Fixes:' to point out the offending commit regardless?