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Bluetooth: Check the SDU size against the MTU value
If the SDU size is greater than the MTU something is wrong, so report an error. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> [jprvita@profusion.mobi: set err to appropriate errno value] Signed-off-by: João Paulo Rechi Vita <jprvita@profusion.mobi> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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@ -3338,6 +3338,11 @@ static int l2cap_sar_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 co
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pi->sdu_len = get_unaligned_le16(skb->data);
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skb_pull(skb, 2);
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if (pi->sdu_len > pi->imtu) {
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err = -EMSGSIZE;
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break;
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}
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pi->sdu = bt_skb_alloc(pi->sdu_len, GFP_ATOMIC);
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if (!pi->sdu) {
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err = -ENOMEM;
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