[dpdk-dev] examples/ip_pipeline: fix buffer not null terminated
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Commit Message
The destination string may not have a NULL termination if the source's
string is equal to the sizeof(tmgr_port->name).
Using strlcpy in place of strncpy fixes this issue as strlcpy guarantees
NULL termination.
Coverity issue: 272592
Fixes: 25961ff3bcb9 ("examples/ip_pipeline: add traffic manager object")
Cc: jasvinder.singh@intel.com
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
---
examples/ip_pipeline/tmgr.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Comments
> -----Original Message-----
> From: Laatz, Kevin
> Sent: Thursday, April 19, 2018 12:03 PM
> To: dev@dpdk.org
> Cc: Dumitrescu, Cristian <cristian.dumitrescu@intel.com>; Laatz, Kevin
> <kevin.laatz@intel.com>; Singh, Jasvinder <jasvinder.singh@intel.com>
> Subject: [PATCH] examples/ip_pipeline: fix buffer not null terminated
>
> The destination string may not have a NULL termination if the source's string is
> equal to the sizeof(tmgr_port->name).
>
> Using strlcpy in place of strncpy fixes this issue as strlcpy guarantees NULL
> termination.
>
> Coverity issue: 272592
> Fixes: 25961ff3bcb9 ("examples/ip_pipeline: add traffic manager object")
> Cc: jasvinder.singh@intel.com
>
> Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
> ---
> examples/ip_pipeline/tmgr.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/examples/ip_pipeline/tmgr.c b/examples/ip_pipeline/tmgr.c index
> b46ca96..40cbf1d 100644
> --- a/examples/ip_pipeline/tmgr.c
> +++ b/examples/ip_pipeline/tmgr.c
> @@ -4,6 +4,8 @@
>
> #include <stdlib.h>
>
> +#include <rte_string_fns.h>
> +
> #include "tmgr.h"
>
> static struct rte_sched_subport_params
> @@ -148,7 +150,7 @@ tmgr_port_create(const char *name, struct
> tmgr_port_params *params)
> }
>
> /* Node fill in */
> - strncpy(tmgr_port->name, name, sizeof(tmgr_port->name));
> + strlcpy(tmgr_port->name, name, sizeof(tmgr_port->name));
> tmgr_port->s = s;
> tmgr_port->n_subports_per_port = params->n_subports_per_port;
> tmgr_port->n_pipes_per_subport = params->n_pipes_per_subport;
> --
> 2.9.5
Reviewed-by: Jasvinder Singh <jasvinder.singh@intel.com>
@@ -4,6 +4,8 @@
#include <stdlib.h>
+#include <rte_string_fns.h>
+
#include "tmgr.h"
static struct rte_sched_subport_params
@@ -148,7 +150,7 @@ tmgr_port_create(const char *name, struct tmgr_port_params *params)
}
/* Node fill in */
- strncpy(tmgr_port->name, name, sizeof(tmgr_port->name));
+ strlcpy(tmgr_port->name, name, sizeof(tmgr_port->name));
tmgr_port->s = s;
tmgr_port->n_subports_per_port = params->n_subports_per_port;
tmgr_port->n_pipes_per_subport = params->n_pipes_per_subport;