linux-kernel - [PATCH 2/3] udmabuf: check that _

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20190822093654.23752-3-kraxel@redhat.com>
Date:   Thu, 22 Aug 2019 11:36:53 +0200
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     laurent.pinchart@...asonboard.com, daniel@...ll.ch,
        Gerd Hoffmann <kraxel@...hat.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        linux-media@...r.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK),
        linaro-mm-sig@...ts.linaro.org (moderated list:DMA BUFFER SHARING
        FRAMEWORK), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/3] udmabuf: check that __pad is zero

Reported-by: Yann Droneaud <ydroneaud@...eya.com>
Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
---
 drivers/dma-buf/udmabuf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
index 9635897458a0..6c3ec8fcef01 100644
--- a/drivers/dma-buf/udmabuf.c
+++ b/drivers/dma-buf/udmabuf.c
@@ -137,6 +137,8 @@ static long udmabuf_create(const struct udmabuf_create_list *head,
 
 	pglimit = (size_limit_mb * 1024 * 1024) >> PAGE_SHIFT;
 	for (i = 0; i < head->count; i++) {
+		if (list[i].__pad)
+			goto err;
 		if (!IS_ALIGNED(list[i].offset, PAGE_SIZE))
 			goto err;
 		if (!IS_ALIGNED(list[i].size, PAGE_SIZE))
-- 
2.18.1