From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 CDB632DBF75; Sat, 12 Sep 2026 14:05:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789221958; cv=none; b=LFc77sy6BCx1TRJCjzg6QrdYFQ0qpZIE90xnmCXj09T3OopD9BNj+YmuXK7IRLR4pkfVRm5Bath/XHU3/GApX0xx8hS/e/HWw9ejdNNYV8oucUmiWPiAprZMqAMtoOWHnGi46LHNeXH3ebi9gf9eXcelx3ihYxK/WYJvcRjqbco= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789221958; c=relaxed/simple; bh=O3QIX8rZPCaPIHYgYQoOTBM4L69+tGcWSOsejjcRHZY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PN8/ApoBVHWS2tfTF/KkqMQYKhvpBtLlj1xQMnzlng6Nk5rwcRg6ITumUATjhOsgAT6FrcccYbmP+OISroyamxHg6tb0QVQNwyrxhdwB9vZnqEuqMdJrP7NDHQFg6LJ9S4pHv2A/RI1RSPdL6atyf/ps1weAKtdqsSAOOf+IzEY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=e2Unj5Fv; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="e2Unj5Fv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97B7A1F000FF; Sat, 12 Sep 2026 14:05:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789221957; bh=5G2qz+ZoedafdGyapjT98I4xy6ZsWKAEXR87Woxv3Cs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=e2Unj5FvuT6jKQTVP7QoSwWvnaCiPNBa1VHPXEIwGluWkNEzdy+zMoV0qDC1Fkagh YmJMeR6ZkZz0/x2Iu2jjchoeTt7kOZLDoGiIrJbfzunDBLgTwAyihMKTsQ1OoEXKdF 1c1O3TvD3zQE/tHDnvUMTf2F9C9AIN0l0C+ashlc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dawei Feng , Jernej Skrabec , Dan Carpenter , Nicolas Dufresne , Hans Verkuil Subject: [PATCH 6.6 0445/1424] media: cedrus: fix memory leak in cedrus_init_ctrls() Date: Sat, 12 Sep 2026 08:47:57 +0200 Message-ID: <20260912065617.251254511@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.279695368@linuxfoundation.org> References: <20260912065607.279695368@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dawei Feng commit 9df2fbe563194da1967a5db083442186c1323efe upstream. In cedrus_init_ctrls(), the V4L2 control handler is initialized before allocating memory for ctx->ctrls. If this allocation fails, the function returns -ENOMEM without freeing the previously allocated handler resources, leading to a memory leak. Fix this by calling v4l2_ctrl_handler_free() on the ctx->ctrls allocation failure path. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1. An x86_64 allyesconfig build showed no new warnings. As we do not have an Allwinner SoC or board with a Cedrus VPU available to test with, no runtime testing was able to be performed. Fixes: 50e761516f2b ("media: platform: Add Cedrus VPU decoder driver") Cc: stable@vger.kernel.org Signed-off-by: Dawei Feng Acked-by: Jernej Skrabec Reviewed-by: Dan Carpenter Signed-off-by: Nicolas Dufresne Signed-off-by: Hans Verkuil Signed-off-by: Greg Kroah-Hartman --- drivers/staging/media/sunxi/cedrus/cedrus.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/staging/media/sunxi/cedrus/cedrus.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus.c @@ -285,8 +285,10 @@ static int cedrus_init_ctrls(struct cedr ctrl_size = sizeof(ctrl) * CEDRUS_CONTROLS_COUNT + 1; ctx->ctrls = kzalloc(ctrl_size, GFP_KERNEL); - if (!ctx->ctrls) + if (!ctx->ctrls) { + v4l2_ctrl_handler_free(hdl); return -ENOMEM; + } j = 0; for (i = 0; i < CEDRUS_CONTROLS_COUNT; i++) {