4b5426aecf
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>
52 lines
1.6 KiB
Diff
52 lines
1.6 KiB
Diff
From c276538416e9238e352d0f720db57ea1020e555f Mon Sep 17 00:00:00 2001
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From: Li Qiang <liq3ea@163.com>
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Date: Tue, 15 Jun 2021 10:02:08 +0800
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Subject: [PATCH] vhost-user-gpu: fix memory leak while calling
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'vg_resource_unref' (CVE-2021-3544)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Fix CVE-2021-3544
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If the guest trigger following sequences, the attach_backing will be leaked:
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vg_resource_create_2d
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vg_resource_attach_backing
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vg_resource_unref
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This patch fix this by freeing 'res->iov' in vg_resource_destroy.
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Fixes: CVE-2021-3544
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Reported-by: default avatarLi Qiang <liq3ea@163.com>
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virtio-gpu fix: 5e8e3c4c
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("virtio-gpu: fix resource leak
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in virgl_cmd_resource_unref")
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Reviewed-by: default avatarPrasad J Pandit <pjp@fedoraproject.org>
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Signed-off-by: default avatarLi Qiang <liq3ea@163.com>
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Reviewed-by: Marc-André Lureau's avatarMarc-André Lureau <marcandre.lureau@redhat.com>
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Message-Id: <20210516030403.107723-5-liq3ea@163.com>
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Signed-off-by: Gerd Hoffmann's avatarGerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
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---
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contrib/vhost-user-gpu/main.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/contrib/vhost-user-gpu/main.c b/contrib/vhost-user-gpu/main.c
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index 4f087d6000..43d9851800 100644
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--- a/contrib/vhost-user-gpu/main.c
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+++ b/contrib/vhost-user-gpu/main.c
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@@ -379,6 +379,7 @@ vg_resource_destroy(VuGpu *g,
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}
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vugbm_buffer_destroy(&res->buffer);
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+ g_free(res->iov);
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pixman_image_unref(res->image);
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QTAILQ_REMOVE(&g->reslist, res, next);
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g_free(res);
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--
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2.27.0
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