From 6348348ee6a76c28159c64d6392fb6ba5a0b4374 Mon Sep 17 00:00:00 2001 From: Li Qiang Date: Tue, 15 Jun 2021 10:09:13 +0800 Subject: [PATCH] vhost-user-gpu: fix memory leak in 'virgl_resource_attach_backing' (CVE-2021-3544) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix CVE-2021-3544 If 'virgl_renderer_resource_attach_iov' failed, the 'res_iovs' will be leaked. Fixes: CVE-2021-3544 Reported-by: default avatarLi Qiang virtio-gpu fix: 33243031 ("virtio-gpu-3d: fix memory leak in resource attach backing") Signed-off-by: default avatarLi Qiang Reviewed-by: Marc-André Lureau's avatarMarc-André Lureau Message-Id: <20210516030403.107723-7-liq3ea@163.com> Signed-off-by: Gerd Hoffmann's avatarGerd Hoffmann Signed-off-by: Jiajie Li --- contrib/vhost-user-gpu/virgl.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/contrib/vhost-user-gpu/virgl.c b/contrib/vhost-user-gpu/virgl.c index 4b8b536edf..79556df094 100644 --- a/contrib/vhost-user-gpu/virgl.c +++ b/contrib/vhost-user-gpu/virgl.c @@ -282,8 +282,11 @@ virgl_resource_attach_backing(VuGpu *g, 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); + if (ret != 0) { + g_free(res_iovs); + } } static void -- 2.27.0