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[PULL 04/23] vhost-user-gpu: fix memory leak while calling 'vg_resource_
From: |
Gerd Hoffmann |
Subject: |
[PULL 04/23] vhost-user-gpu: fix memory leak while calling 'vg_resource_unref' (CVE-2021-3544) |
Date: |
Thu, 27 May 2021 16:23:21 +0200 |
From: Li Qiang <liq3ea@163.com>
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: Li Qiang <liq3ea@163.com>
virtio-gpu fix: 5e8e3c4c75 ("virtio-gpu: fix resource leak
in virgl_cmd_resource_unref")
Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-5-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
contrib/vhost-user-gpu/vhost-user-gpu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/contrib/vhost-user-gpu/vhost-user-gpu.c
b/contrib/vhost-user-gpu/vhost-user-gpu.c
index 0437e52b6460..770dfad52989 100644
--- a/contrib/vhost-user-gpu/vhost-user-gpu.c
+++ b/contrib/vhost-user-gpu/vhost-user-gpu.c
@@ -400,6 +400,7 @@ 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);
--
2.31.1
- [PULL 00/23] Vga 20210527 patches, Gerd Hoffmann, 2021/05/27
- [PULL 01/23] vhost-user-gpu: fix memory disclosure in virgl_cmd_get_capset_info (CVE-2021-3545), Gerd Hoffmann, 2021/05/27
- [PULL 02/23] vhost-user-gpu: fix resource leak in 'vg_resource_create_2d' (CVE-2021-3544), Gerd Hoffmann, 2021/05/27
- [PULL 03/23] vhost-user-gpu: fix memory leak in vg_resource_attach_backing (CVE-2021-3544), Gerd Hoffmann, 2021/05/27
- [PULL 04/23] vhost-user-gpu: fix memory leak while calling 'vg_resource_unref' (CVE-2021-3544),
Gerd Hoffmann <=
- [PULL 06/23] vhost-user-gpu: fix memory leak in 'virgl_resource_attach_backing' (CVE-2021-3544), Gerd Hoffmann, 2021/05/27
- [PULL 05/23] vhost-user-gpu: fix memory leak in 'virgl_cmd_resource_unref' (CVE-2021-3544), Gerd Hoffmann, 2021/05/27
- [PULL 08/23] vhost-user-gpu: abstract vg_cleanup_mapping_iov, Gerd Hoffmann, 2021/05/27
- [PULL 07/23] vhost-user-gpu: fix OOB write in 'virgl_cmd_get_capset' (CVE-2021-3546), Gerd Hoffmann, 2021/05/27
- [PULL 11/23] headers: Add udmabuf.h, Gerd Hoffmann, 2021/05/27
- [PULL 10/23] ui: Get the fd associated with udmabuf driver, Gerd Hoffmann, 2021/05/27
- [PULL 12/23] virtio-gpu: Add udmabuf helpers, Gerd Hoffmann, 2021/05/27
- [PULL 09/23] hw/display/qxl: Set pci rom address aligned with page size, Gerd Hoffmann, 2021/05/27
- [PULL 13/23] stubs: Add stubs for udmabuf helpers, Gerd Hoffmann, 2021/05/27
- [PULL 14/23] virtio-gpu: Add virtio_gpu_find_check_resource, Gerd Hoffmann, 2021/05/27