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 7986E17727; Mon, 27 May 2024 19:36:00 +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=1716838560; cv=none; b=f0fmj8srwM+83gtqBhrxmmzZ76sC08WHBYIQgbbckMlbZwLUHb2QD4BYUw2B5XPxI6nZa+YK5tIXTDFrJOfaNVqOYJhCtUOCLrn7zSAdlqz7PXgV7AL44fEv0VjkdMWnOdXf4zTuRi+Fi2JqN5nNeWHp/kwg2CkB1/oH2ZEgFy0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716838560; c=relaxed/simple; bh=Kldm/8m25KEy11mhGXUeXo7uCFuV9Lb1bqkpDt6BHbg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MAOT8b8KdCNtxa8ooualRSsjzLrROMzde6p0yEDunyD1J3zmLc8NN1eXP2ukZbbX30GWakh80csVnN8gHkjNT0kcUvuC5eioxU9JXHxh2HdW97Hvs4gv715ygfD/PdE8WmaYydnhxrKIQUVkqNW7koNwo5vfvSNAL+Ugl9HtcHQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=reU2V3If; 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="reU2V3If" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C151C2BBFC; Mon, 27 May 2024 19:35:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1716838560; bh=Kldm/8m25KEy11mhGXUeXo7uCFuV9Lb1bqkpDt6BHbg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=reU2V3IfnlSs/gv8wBpKNsWj8B3I5+uI0E2JOqgwGC7l1WTapbhI64cMI5iE1GX9i WXF/J1bp18GzLy7zcMt1HDBvBipQyrYCx7fobVyJPdSmR5laQKWzdiMxZCYCg0Ojp4 zj0VVDRLp40JvkxsFbOt8fJsiaN7ZEjD/as0zd8Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhipeng Lu , Andy Shevchenko , Hans de Goede , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 6.8 400/493] media: atomisp: ssh_css: Fix a null-pointer dereference in load_video_binaries Date: Mon, 27 May 2024 20:56:42 +0200 Message-ID: <20240527185643.362529757@linuxfoundation.org> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240527185626.546110716@linuxfoundation.org> References: <20240527185626.546110716@linuxfoundation.org> User-Agent: quilt/0.67 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 6.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Zhipeng Lu [ Upstream commit 3b621e9e9e148c0928ab109ac3d4b81487469acb ] The allocation failure of mycs->yuv_scaler_binary in load_video_binaries() is followed with a dereference of mycs->yuv_scaler_binary after the following call chain: sh_css_pipe_load_binaries() |-> load_video_binaries(mycs->yuv_scaler_binary == NULL) | |-> sh_css_pipe_unload_binaries() |-> unload_video_binaries() In unload_video_binaries(), it calls to ia_css_binary_unload with argument &pipe->pipe_settings.video.yuv_scaler_binary[i], which refers to the same memory slot as mycs->yuv_scaler_binary. Thus, a null-pointer dereference is triggered. Link: https://lore.kernel.org/r/20240118151303.3828292-1-alexious@zju.edu.cn Fixes: a49d25364dfb ("staging/atomisp: Add support for the Intel IPU v2") Signed-off-by: Zhipeng Lu Reviewed-by: Andy Shevchenko Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/staging/media/atomisp/pci/sh_css.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/staging/media/atomisp/pci/sh_css.c b/drivers/staging/media/atomisp/pci/sh_css.c index f35c90809414c..638f08b3f21be 100644 --- a/drivers/staging/media/atomisp/pci/sh_css.c +++ b/drivers/staging/media/atomisp/pci/sh_css.c @@ -4719,6 +4719,7 @@ static int load_video_binaries(struct ia_css_pipe *pipe) sizeof(struct ia_css_binary), GFP_KERNEL); if (!mycs->yuv_scaler_binary) { + mycs->num_yuv_scaler = 0; err = -ENOMEM; return err; } -- 2.43.0