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 A83D11F75B6; Tue, 3 Dec 2024 15:33:58 +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=1733240038; cv=none; b=QVx/77Ts0Pp1rzIhaNNjtWrFQox3UcqYUKeynK8uldsaFdk4KhthuVoKwe07eKsvdBjwf2C4H32zO9eRkc161koT6hisW71sLK1hA9VQ3H27qk9yND8FR4FKYFLx8zjSSDt4prQ5Dxq2s/4Pmx7b2+uX7LfYuNYs+0Pcqn0JE8U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733240038; c=relaxed/simple; bh=uJyb7gxqXkIZELQNYCRxul568AnVmgd+vS8EKZ/sApg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=plQOJpoDQREBIGow3F1jTCkJPkgwt3y3MCzNFWxIcLYVDnTundg5P4DmhCAciG+DIH6cwcvNEYHbs7P9VIwkLNcdi7+ZNhLb1CGkRyL+PvxDvOcFKaztCCsk0vD/wF9pniKQ8vbH3Ov2lMpwUrZ024GWjJBMD7za2Tm3JAMf+s8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=VUtaskQo; 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="VUtaskQo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3079CC4CECF; Tue, 3 Dec 2024 15:33:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1733240038; bh=uJyb7gxqXkIZELQNYCRxul568AnVmgd+vS8EKZ/sApg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VUtaskQoBsZUO1+b6HOMZ+zRrj4DlORhic94H+QrLC49FI+aGwT/EyNl/YDQnAccx AQ5z71x8Lf08gWXCxSe5CL8kocEXjWA5Q5Q1AuXtvYld5yYMaOLp3OBhPpamU/S0Gl CX+inGLzTjTpqDPXxv0Qt6SMtWr4hBJUz36tQo9I= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dan Carpenter , John Paul Adrian Glaubitz , Sasha Levin Subject: [PATCH 6.11 813/817] sh: intc: Fix use-after-free bug in register_intc_controller() Date: Tue, 3 Dec 2024 15:46:25 +0100 Message-ID: <20241203144028.189056375@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241203143955.605130076@linuxfoundation.org> References: <20241203143955.605130076@linuxfoundation.org> User-Agent: quilt/0.67 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 6.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter [ Upstream commit 63e72e551942642c48456a4134975136cdcb9b3c ] In the error handling for this function, d is freed without ever removing it from intc_list which would lead to a use after free. To fix this, let's only add it to the list after everything has succeeded. Fixes: 2dcec7a988a1 ("sh: intc: set_irq_wake() support") Signed-off-by: Dan Carpenter Reviewed-by: John Paul Adrian Glaubitz Signed-off-by: John Paul Adrian Glaubitz Signed-off-by: Sasha Levin --- drivers/sh/intc/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c index 74350b5871dc8..ea571eeb30787 100644 --- a/drivers/sh/intc/core.c +++ b/drivers/sh/intc/core.c @@ -209,7 +209,6 @@ int __init register_intc_controller(struct intc_desc *desc) goto err0; INIT_LIST_HEAD(&d->list); - list_add_tail(&d->list, &intc_list); raw_spin_lock_init(&d->lock); INIT_RADIX_TREE(&d->tree, GFP_ATOMIC); @@ -369,6 +368,7 @@ int __init register_intc_controller(struct intc_desc *desc) d->skip_suspend = desc->skip_syscore_suspend; + list_add_tail(&d->list, &intc_list); nr_intc_controllers++; return 0; -- 2.43.0