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 2B2142ECD02; Tue, 15 Jul 2025 13:45:08 +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=1752587108; cv=none; b=ccOe6bhidW14mYLwOvHRQPva0yzOxN+oLDBHiFwGU7ULGjrtNhsDwaK8Ben7/LaFBSWTxjeROW854aoEoKc1iuavD/PqUrFq/ZZaCM4HncjtKNeduqCip1wpWwdudVSxSXIMA3dBHDzWffEvlU6aHYN/Hpue96MUAEFPaLV5GUI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752587108; c=relaxed/simple; bh=/LEnGDZVeiqWAcsRgzl7jVcwwyR8Ge2zcMdaGIy6wPo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OH5lTrF1THNMTEIO/CpNNzc8jdKzWwWUjKjdl5tb5wXNE0yrd/FduCJl3S1aj8VWpktRHsb0+0h9D4WFtTvO6Ock77eIYrYK5+FEDfzAbrgSpXMQ1J1rjiCGIDzAJoyQpQZVwk4RhnNZ9W3QlUkl6Q34BSNmmasPxcPhAcBVKvY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=X4b6Np7M; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="X4b6Np7M" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B34B4C4CEE3; Tue, 15 Jul 2025 13:45:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1752587108; bh=/LEnGDZVeiqWAcsRgzl7jVcwwyR8Ge2zcMdaGIy6wPo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=X4b6Np7MutiJgHIMLuQliWTEN27/hVw30VIsCA6mrdfAmbymsFRL8hVqkVLlYnCwU zEy7OSH9WaDK5qlbzeDq1O6wwdw9NA+PAkD37klOpZKKJIVDr7yvBORNbJ64UL4pb/ NJguxVOMsE9/OpSQWAgG0KOZZ7d6sGQsby8rMMjk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tamura Dai , Mark Brown , Sasha Levin Subject: [PATCH 6.15 170/192] ASoC: SOF: Intel: hda: Use devm_kstrdup() to avoid memleak. Date: Tue, 15 Jul 2025 15:14:25 +0200 Message-ID: <20250715130821.734444921@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250715130814.854109770@linuxfoundation.org> References: <20250715130814.854109770@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tamura Dai [ Upstream commit 6c038b58a2dc5a008c7e7a1297f5aaa4deaaaa7e ] sof_pdata->tplg_filename can have address allocated by kstrdup() and can be overwritten. Memory leak was detected with kmemleak: unreferenced object 0xffff88812391ff60 (size 16): comm "kworker/4:1", pid 161, jiffies 4294802931 hex dump (first 16 bytes): 73 6f 66 2d 68 64 61 2d 67 65 6e 65 72 69 63 00 sof-hda-generic. backtrace (crc 4bf1675c): __kmalloc_node_track_caller_noprof+0x49c/0x6b0 kstrdup+0x46/0xc0 hda_machine_select.cold+0x1de/0x12cf [snd_sof_intel_hda_generic] sof_init_environment+0x16f/0xb50 [snd_sof] sof_probe_continue+0x45/0x7c0 [snd_sof] sof_probe_work+0x1e/0x40 [snd_sof] process_one_work+0x894/0x14b0 worker_thread+0x5e5/0xfb0 kthread+0x39d/0x760 ret_from_fork+0x31/0x70 ret_from_fork_asm+0x1a/0x30 Signed-off-by: Tamura Dai Link: https://patch.msgid.link/20250615235548.8591-1-kirinode0@gmail.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/sof/intel/hda.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 6a3932d90b43a..27b077f5c8f58 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -1254,11 +1254,11 @@ static int check_tplg_quirk_mask(struct snd_soc_acpi_mach *mach) return 0; } -static char *remove_file_ext(const char *tplg_filename) +static char *remove_file_ext(struct device *dev, const char *tplg_filename) { char *filename, *tmp; - filename = kstrdup(tplg_filename, GFP_KERNEL); + filename = devm_kstrdup(dev, tplg_filename, GFP_KERNEL); if (!filename) return NULL; @@ -1342,7 +1342,7 @@ struct snd_soc_acpi_mach *hda_machine_select(struct snd_sof_dev *sdev) */ if (!sof_pdata->tplg_filename) { /* remove file extension if it exists */ - tplg_filename = remove_file_ext(mach->sof_tplg_filename); + tplg_filename = remove_file_ext(sdev->dev, mach->sof_tplg_filename); if (!tplg_filename) return NULL; -- 2.39.5