diff options
Diffstat (limited to 'net/netfilter/nft_queue.c')
| -rw-r--r-- | net/netfilter/nft_queue.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/netfilter/nft_queue.c b/net/netfilter/nft_queue.c index 61d216eb7917..d16d59959ff6 100644 --- a/net/netfilter/nft_queue.c +++ b/net/netfilter/nft_queue.c @@ -65,6 +65,7 @@ static int nft_queue_init(const struct nft_ctx *ctx, const struct nlattr * const tb[]) { struct nft_queue *priv = nft_expr_priv(expr); + u32 maxid; if (tb[NFTA_QUEUE_NUM] == NULL) return -EINVAL; @@ -74,6 +75,16 @@ static int nft_queue_init(const struct nft_ctx *ctx, if (tb[NFTA_QUEUE_TOTAL] != NULL) priv->queues_total = ntohs(nla_get_be16(tb[NFTA_QUEUE_TOTAL])); + else + priv->queues_total = 1; + + if (priv->queues_total == 0) + return -EINVAL; + + maxid = priv->queues_total - 1 + priv->queuenum; + if (maxid > U16_MAX) + return -ERANGE; + if (tb[NFTA_QUEUE_FLAGS] != NULL) { priv->flags = ntohs(nla_get_be16(tb[NFTA_QUEUE_FLAGS])); if (priv->flags & ~NFT_QUEUE_FLAG_MASK) |