CVE: CVE-2021-3544
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Upstream-Status: Backport
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Signed-off-by: Ross Burton <ross.burton@arm.com>
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From 63736af5a6571d9def93769431e0d7e38c6677bf Mon Sep 17 00:00:00 2001
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From: Li Qiang <liq3ea@163.com>
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Date: Sat, 15 May 2021 20:04:01 -0700
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Subject: [PATCH 6/7] vhost-user-gpu: fix memory leak in
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'virgl_resource_attach_backing' (CVE-2021-3544)
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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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If 'virgl_renderer_resource_attach_iov' failed, the 'res_iovs' will
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be leaked.
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Fixes: CVE-2021-3544
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Reported-by: Li Qiang <liq3ea@163.com>
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virtio-gpu fix: 33243031da ("virtio-gpu-3d: fix memory leak
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in resource attach backing")
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Signed-off-by: Li Qiang <liq3ea@163.com>
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Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Message-Id: <20210516030403.107723-7-liq3ea@163.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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---
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contrib/vhost-user-gpu/virgl.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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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 c669d73a1d..a16a311d80 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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@@ -287,8 +287,11 @@ virgl_resource_attach_backing(VuGpu *g,
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return;
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}
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- virgl_renderer_resource_attach_iov(att_rb.resource_id,
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+ ret = virgl_renderer_resource_attach_iov(att_rb.resource_id,
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res_iovs, att_rb.nr_entries);
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+ if (ret != 0) {
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+ g_free(res_iovs);
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+ }
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}
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static void
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--
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2.25.1
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