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vhost-user-gpu: fix memory leak in 'virgl_resource_attach_backing' (CVE-2021-3544)

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If 'virgl_renderer_resource_attach_iov' failed, the 'res_iovs' will
be leaked.

Fixes: CVE-2021-3544
Reported-by: Li Qiang <liq3ea@163.com>
virtio-gpu fix: 33243031da ("virtio-gpu-3d: fix memory leak
in resource attach backing")

Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-7-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Li Qiang
2021-05-15 20:04:01 -07:00
committed by Gerd Hoffmann
parent f6091d86ba
commit 63736af5a6
1 changed files with 4 additions and 1 deletions
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5
contrib/vhost-user-gpu/virgl.c
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@@ -287,8 +287,11 @@ virgl_resource_attach_backing(VuGpu *g,
return; return;
} }
virgl_renderer_resource_attach_iov(att_rb.resource_id, ret = virgl_renderer_resource_attach_iov(att_rb.resource_id,
res_iovs, att_rb.nr_entries); res_iovs, att_rb.nr_entries);
if (ret != 0) {
g_free(res_iovs);
}
} }
static void static void