Commit 7da19971 authored by Marek Lindner's avatar Marek Lindner Committed by Antonio Quartulli

batman-adv: check return value of pskb_trim_rcsum()

Reported-by: default avatarSven Eckelmann <sven@narfation.org>
Signed-off-by: default avatarMarek Lindner <lindner_marek@yahoo.de>
Acked-by: default avatarMartin Hundebøll <martin@hundeboll.net>
Signed-off-by: default avatarAntonio Quartulli <ordex@autistici.org>
parent 293c9c1c
......@@ -1514,6 +1514,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
struct ethhdr *ethhdr, ethhdr_tmp;
uint8_t *orig_dest, ttl, ttvn;
unsigned int coding_len;
int err;
/* Save headers temporarily */
memcpy(&coded_packet_tmp, skb->data, sizeof(coded_packet_tmp));
......@@ -1568,8 +1569,11 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
coding_len);
/* Resize decoded skb if decoded with larger packet */
if (nc_packet->skb->len > coding_len + h_size)
pskb_trim_rcsum(skb, coding_len + h_size);
if (nc_packet->skb->len > coding_len + h_size) {
err = pskb_trim_rcsum(skb, coding_len + h_size);
if (err)
return NULL;
}
/* Create decoded unicast packet */
unicast_packet = (struct batadv_unicast_packet *)skb->data;
......
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