irda: off by one

commit cf9b94f88bdbe8a02015fc30d7c232b2d262d4ad upstream.

This is an off by one.  We would go past the end when we NUL terminate
the "value" string at end of the function.  The "value" buffer is
allocated in irlan_client_parse_response() or
irlan_provider_parse_command().

CC: stable@kernel.org
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/irda/irlan/irlan_common.c b/net/irda/irlan/irlan_common.c
index a788f9e9427d2c1c127d411adc8b06eb9d19ba87..6130f9d9dbe138edffaaafed0528b1d2110db0c4 100644 (file)
--- a/net/irda/irlan/irlan_common.c
+++ b/net/irda/irlan/irlan_common.c
@@ -1102,7 +1102,7 @@ int irlan_extract_param(__u8 *buf, char *name, char *value, __u16 *len)
        memcpy(&val_len, buf+n, 2); /* To avoid alignment problems */
        le16_to_cpus(&val_len); n+=2;
 
-       if (val_len > 1016) {
+       if (val_len >= 1016) {
                IRDA_DEBUG(2, "%s(), parameter length to long\n", __func__ );
                return -RSP_INVALID_COMMAND_FORMAT;
        }