diff mbox series

[v5,5/5] net/mvneta: fix possible out-of-bounds write

Message ID 20231106073125.55280-6-fengchengwen@huawei.com (mailing list archive)
State New
Delegated to: Thomas Monjalon
Headers
Series fix segment fault when parse args |

Checks

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Commit Message

fengchengwen Nov. 6, 2023, 7:31 a.m. UTC 
  The mvneta_ifnames_get() function will save 'iface' value to ifnames,
it will out-of-bounds write if passed many iface pairs (e.g.
'iface=xxx,iface=xxx,...').

Fixes: 4ccc8d770d3b ("net/mvneta: add PMD skeleton")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Ferruh Yigit <ferruh.yigit@amd.com>
---
 drivers/net/mvneta/mvneta_ethdev.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

lihuisong (C) Nov. 21, 2023, 2:11 a.m. UTC | #1 
Acked-by: Huisong Li <lihuisong@huawei.com>

在 2023/11/6 15:31, Chengwen Feng 写道:
> The mvneta_ifnames_get() function will save 'iface' value to ifnames,
> it will out-of-bounds write if passed many iface pairs (e.g.
> 'iface=xxx,iface=xxx,...').
>
> Fixes: 4ccc8d770d3b ("net/mvneta: add PMD skeleton")
> Cc: stable@dpdk.org
>
> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> Acked-by: Ferruh Yigit <ferruh.yigit@amd.com>
> ---
>   drivers/net/mvneta/mvneta_ethdev.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c
> index daa69e533a..8032a712f4 100644
> --- a/drivers/net/mvneta/mvneta_ethdev.c
> +++ b/drivers/net/mvneta/mvneta_ethdev.c
> @@ -91,6 +91,9 @@ mvneta_ifnames_get(const char *key __rte_unused, const char *value,
>   {
>   	struct mvneta_ifnames *ifnames = extra_args;
>   
> +	if (ifnames->idx >= NETA_NUM_ETH_PPIO)
> +		return -EINVAL;
> +
>   	ifnames->names[ifnames->idx++] = value;
>   
>   	return 0;
diff mbox series

Patch

diff --git a/drivers/net/mvneta/mvneta_ethdev.c b/drivers/net/mvneta/mvneta_ethdev.c
index daa69e533a..8032a712f4 100644
--- a/drivers/net/mvneta/mvneta_ethdev.c
+++ b/drivers/net/mvneta/mvneta_ethdev.c
@@ -91,6 +91,9 @@  mvneta_ifnames_get(const char *key __rte_unused, const char *value,
 {
 	struct mvneta_ifnames *ifnames = extra_args;
 
+	if (ifnames->idx >= NETA_NUM_ETH_PPIO)
+		return -EINVAL;
+
 	ifnames->names[ifnames->idx++] = value;
 
 	return 0;