qemu: display: CVE-2016-9908
virtio-gpu: information leakage in virgl_cmd_get_capset References: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9908 (From OE-Core rev: f5f4a08baeb4864984fcb9a837a3a8c51274df2b) Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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From 7139ccbc907441337b4b59cde2c5b5a54cb5b2cc Mon Sep 17 00:00:00 2001
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From: Sona Sarmadi <sona.sarmadi@enea.com>
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virtio-gpu: fix information leak in capset get dispatch
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In virgl_cmd_get_capset function, it uses g_malloc to allocate
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a response struct to the guest. As the 'resp'struct hasn't been full
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initialized it will lead the 'resp->padding' field to the guest.
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Use g_malloc0 to avoid this.
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Signed-off-by: Li Qiang <liqiang6-s@360.cn>
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Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Message-id: 58188cae.4a6ec20a.3d2d1.aff2@mx.google.com
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[Sona: backported from master to v2.8.0 and resolved conflict]
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Reference to upstream patch:
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http://git.qemu-project.org/?p=qemu.git;a=commit;h=85d9d044471f93c48c5c396f7e217b4ef12f69f8
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CVE: CVE-2016-9908
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Upstream-Status: Backport
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
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---
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hw/display/virtio-gpu-3d.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c
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index 23f39de..d98b140 100644
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--- a/hw/display/virtio-gpu-3d.c
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+++ b/hw/display/virtio-gpu-3d.c
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@@ -371,7 +371,7 @@ static void virgl_cmd_get_capset(VirtIOGPU *g,
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virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
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&max_size);
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- resp = g_malloc(sizeof(*resp) + max_size);
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+ resp = g_malloc0(sizeof(*resp) + max_size);
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resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
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virgl_renderer_fill_caps(gc.capset_id,
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--
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1.9.1
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@ -28,6 +28,7 @@ SRC_URI += " \
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file://0002-Introduce-condition-to-notify-waiters-of-completed-c.patch \
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file://0003-Introduce-condition-in-TPM-backend-for-notification.patch \
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file://0004-Add-support-for-VM-suspend-resume-for-TPM-TIS.patch \
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file://CVE-2016-9908.patch \
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"
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SRC_URI_append_class-native = " \
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