packages/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

vhost-user-gpu: fix memory leak while calling 'vg_resource_unref' (CVE-2021-3544)

Browse Source 
Fix CVE-2021-3544

If the guest trigger following sequences, the attach_backing will be leaked:

	vg_resource_create_2d
	vg_resource_attach_backing
	vg_resource_unref

This patch fix this by freeing 'res->iov' in vg_resource_destroy.

Fixes: CVE-2021-3544
Reported-by: default avatarLi Qiang <liq3ea@163.com>
virtio-gpu fix: 5e8e3c4c

 ("virtio-gpu: fix resource leak
in virgl_cmd_resource_unref")
Reviewed-by: default avatarPrasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: default avatarLi Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau's avatarMarc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-5-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann's avatarGerd Hoffmann <kraxel@redhat.com>

Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
This commit is contained in:
Chen Qun 2021-06-15 10:02:08 +08:00
parent 3f234147fb
commit 4b5426aecf
1 changed files with 51 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
vhost-user-gpu-fix-memory-leak-while-calling-vg_reso.patch Normal file
View File

@ -0,0 +1,51 @@
From c276538416e9238e352d0f720db57ea1020e555f Mon Sep 17 00:00:00 2001
From: Li Qiang <liq3ea@163.com>
Date: Tue, 15 Jun 2021 10:02:08 +0800
Subject: [PATCH] vhost-user-gpu: fix memory leak while calling
'vg_resource_unref' (CVE-2021-3544)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Fix CVE-2021-3544
If the guest trigger following sequences, the attach_backing will be leaked:
vg_resource_create_2d
vg_resource_attach_backing
vg_resource_unref
This patch fix this by freeing 'res->iov' in vg_resource_destroy.
Fixes: CVE-2021-3544
Reported-by: default avatarLi Qiang <liq3ea@163.com>
virtio-gpu fix: 5e8e3c4c
("virtio-gpu: fix resource leak
in virgl_cmd_resource_unref")
Reviewed-by: default avatarPrasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: default avatarLi Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau's avatarMarc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-5-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann's avatarGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
---
contrib/vhost-user-gpu/main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/contrib/vhost-user-gpu/main.c b/contrib/vhost-user-gpu/main.c
index 4f087d6000..43d9851800 100644
--- a/contrib/vhost-user-gpu/main.c
+++ b/contrib/vhost-user-gpu/main.c
@@ -379,6 +379,7 @@ vg_resource_destroy(VuGpu *g,
}
vugbm_buffer_destroy(&res->buffer);
+ g_free(res->iov);
pixman_image_unref(res->image);
QTAILQ_REMOVE(&g->reslist, res, next);
g_free(res);
--
2.27.0