From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"amorenoz@redhat.com" <amorenoz@redhat.com>
Cc: "stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH 3/7] vhost: validate index in guest notification API
Date: Wed, 21 Oct 2020 11:30:18 +0000 [thread overview]
Message-ID: <MN2PR11MB4063432DC7FA413E8FA2DA429C1C0@MN2PR11MB4063.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20201019173415.582407-4-maxime.coquelin@redhat.com>
> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Tuesday, October 20, 2020 1:34 AM
> To: dev@dpdk.org; Xia, Chenbo <chenbo.xia@intel.com>; amorenoz@redhat.com
> Cc: Maxime Coquelin <maxime.coquelin@redhat.com>; stable@dpdk.org
> Subject: [PATCH 3/7] vhost: validate index in guest notification API
>
> This patch validates the queue index parameter, in order
> to ensure neither out-of-bound accesses nor NULL pointer
> dereferencing happen.
>
> Fixes: 9eed6bfd2efb ("vhost: allow to enable or disable features")
> Cc: stable@dpdk.org
>
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
> lib/librte_vhost/vhost.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
> index 193dafc369..801a1a5098 100644
> --- a/lib/librte_vhost/vhost.c
> +++ b/lib/librte_vhost/vhost.c
> @@ -1352,7 +1352,12 @@ rte_vhost_enable_guest_notification(int vid,
> uint16_t queue_id, int enable)
> if (!dev)
> return -1;
>
> + if (queue_id >= VHOST_MAX_VRING)
> + return -1;
> +
> vq = dev->virtqueue[queue_id];
> + if (!vq)
> + return -1;
>
> rte_spinlock_lock(&vq->access_lock);
>
> --
> 2.26.2
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
next prev parent reply other threads:[~2020-10-21 11:30 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20201019173415.582407-1-maxime.coquelin@redhat.com>
2020-10-19 17:34 ` [dpdk-stable] [PATCH 1/7] vhost: fix virtqueues metadata allocation Maxime Coquelin
2020-10-21 11:10 ` Xia, Chenbo
2020-10-21 12:06 ` Maxime Coquelin
2020-10-22 11:00 ` Xia, Chenbo
2020-10-19 17:34 ` [dpdk-stable] [PATCH 2/7] vhost: validate index in available entries API Maxime Coquelin
2020-10-21 11:28 ` Xia, Chenbo
2020-10-19 17:34 ` [dpdk-stable] [PATCH 3/7] vhost: validate index in guest notification API Maxime Coquelin
2020-10-21 11:30 ` Xia, Chenbo [this message]
2020-10-19 17:34 ` [dpdk-stable] [PATCH 4/7] vhost: validate index in live-migration API Maxime Coquelin
2020-10-21 11:30 ` Xia, Chenbo
2020-10-19 17:34 ` [dpdk-stable] [PATCH 5/7] vhost: validate index in inflight API Maxime Coquelin
2020-10-21 11:30 ` Xia, Chenbo
2020-10-19 17:34 ` [dpdk-stable] [PATCH 6/7] vhost: validate index in async API Maxime Coquelin
2020-10-21 11:31 ` Xia, Chenbo
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