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Commit-Id: 63736af5a6571d9def93769431e0d7e38c6677bf
From: Li Qiang <liq3ea@163.com>
Date: Sat, 15 May 2021 20:04:01 -0700
Subject: 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
Bug-Debian: https://bugs.debian.org/989042
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>
---
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 c669d73a1d..a16a311d80 100644
--- a/contrib/vhost-user-gpu/virgl.c
+++ b/contrib/vhost-user-gpu/virgl.c
@@ -287,8 +287,11 @@ 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
--
2.30.2
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