[PATCH 56/64] vhost-user-gpu: fix resource leak in 'vg_resource_create_2d' (CVE-2021-3544)

[Michael Roth]

From: Li Qiang <liq3ea@163.com>

Call 'vugbm_buffer_destroy' in error path to avoid resource leak.

Fixes: CVE-2021-3544
Reported-by: Li Qiang <liq3ea@163.com>
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: <20210516030403.107723-3-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 86dd8fac2acc366930a5dc08d3fb1b1e816f4e1e)
Signed-off-by: Michael Roth <michael.roth@amd.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 f73f292c9f..b5e153d0d6 100644
--- a/contrib/vhost-user-gpu/vhost-user-gpu.c
+++ b/contrib/vhost-user-gpu/vhost-user-gpu.c
@@ -349,6 +349,7 @@ vg_resource_create_2d(VuGpu *g,
         g_critical("%s: resource creation failed %d %d %d",
                    __func__, c2d.resource_id, c2d.width, c2d.height);
         g_free(res);
+        vugbm_buffer_destroy(&res->buffer);
         cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY;
         return;
     }
-- 
2.25.1