45 lines
1.4 KiB
Diff
45 lines
1.4 KiB
Diff
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From 511cac8cbc60fafdae2589d674b7aeab15388eef 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 10:11:17 +0800
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Subject: [PATCH] vhost-user-gpu: fix memory disclosure in
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virgl_cmd_get_capset_info (CVE-2021-3545)
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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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Otherwise some of the 'resp' will be leaked to guest.
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Fixes: CVE-2021-3545
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Reported-by: default avatarLi Qiang <liq3ea@163.com>
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virtio-gpu fix: 42a8dadc
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("virtio-gpu: fix information leak
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in getting capset info dispatch")
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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: <20210516030403.107723-2-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/virgl.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/contrib/vhost-user-gpu/virgl.c b/contrib/vhost-user-gpu/virgl.c
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index 79556df094..44e79ab82a 100644
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--- a/contrib/vhost-user-gpu/virgl.c
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+++ b/contrib/vhost-user-gpu/virgl.c
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@@ -131,6 +131,7 @@ virgl_cmd_get_capset_info(VuGpu *g,
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VUGPU_FILL_CMD(info);
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+ memset(&resp, 0, sizeof(resp));
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if (info.capset_index == 0) {
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resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL;
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virgl_renderer_get_cap_set(resp.capset_id,
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--
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2.27.0
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