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-rw-r--r--package/swconfig/src/swlib.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/package/swconfig/src/swlib.c b/package/swconfig/src/swlib.c
index 59456a33d9..c2316d0686 100644
--- a/package/swconfig/src/swlib.c
+++ b/package/swconfig/src/swlib.c
@@ -368,11 +368,26 @@ int swlib_set_attr_string(struct switch_dev *dev, struct switch_attr *a, int por
ptr = (char *)str;
while(ptr && *ptr)
{
+ while(*ptr && isspace(*ptr))
+ ptr++;
+
+ if (!*ptr)
+ break;
+
+ if (!isdigit(*ptr))
+ return -1;
+
+ if (val.len >= dev->ports)
+ return -1;
+
ports[val.len].flags = 0;
ports[val.len].id = strtoul(ptr, &ptr, 10);
while(*ptr && !isspace(*ptr)) {
if (*ptr == 't')
ports[val.len].flags |= SWLIB_PORT_FLAG_TAGGED;
+ else
+ return -1;
+
ptr++;
}
if (*ptr)