irda: small read beyond end of array in debug code
charset comes from skb->data. It's a number in the 0-255 range.
If we have debugging turned on then this could cause a read beyond
the end of the array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/irda/iriap.c b/net/irda/iriap.c
index e71e85b..29340a9 100644
--- a/net/irda/iriap.c
+++ b/net/irda/iriap.c
@@ -495,8 +495,11 @@
/* case CS_ISO_8859_9: */
/* case CS_UNICODE: */
default:
- IRDA_DEBUG(0, "%s(), charset %s, not supported\n",
- __func__, ias_charset_types[charset]);
+ IRDA_DEBUG(0, "%s(), charset [%d] %s, not supported\n",
+ __func__, charset,
+ charset < ARRAY_SIZE(ias_charset_types) ?
+ ias_charset_types[charset] :
+ "(unknown)");
/* Aborting, close connection! */
iriap_disconnect_request(self);
