From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50271 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030320AbbKFAju (ORCPT ); Thu, 5 Nov 2015 19:39:50 -0500 Subject: Patch "drm: crtc: integer overflow in drm_property_create_blob()" has been added to the 4.2-stable tree To: dan.carpenter@oracle.com, airlied@gmail.com, daniels@collabora.com, gregkh@linuxfoundation.org Cc: , From: Date: Thu, 05 Nov 2015 16:39:49 -0800 Message-ID: <14467703897328@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled drm: crtc: integer overflow in drm_property_create_blob() to the 4.2-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-crtc-integer-overflow-in-drm_property_create_blob.patch and it can be found in the queue-4.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 9ac0934bbe52290e4e4c2a58ec41cab9b6ca8c96 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 29 Oct 2015 16:37:54 +0300 Subject: drm: crtc: integer overflow in drm_property_create_blob() From: Dan Carpenter commit 9ac0934bbe52290e4e4c2a58ec41cab9b6ca8c96 upstream. The size here comes from the user via the ioctl, it is a number between 1-u32max so the addition here could overflow on 32 bit systems. Fixes: f453ba046074 ('DRM: add mode setting support') Signed-off-by: Dan Carpenter Reviewed-by: Daniel Stone Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/drm_crtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -4221,7 +4221,7 @@ drm_property_create_blob(struct drm_devi struct drm_property_blob *blob; int ret; - if (!length) + if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob)) return ERR_PTR(-EINVAL); blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); Patches currently in stable-queue which might be from dan.carpenter@oracle.com are queue-4.2/drm-crtc-integer-overflow-in-drm_property_create_blob.patch