diff options
| author | Patrick McHardy <kaber@trash.net> | 2015-04-11 02:27:26 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2015-04-13 16:25:49 +0200 |
| commit | 45d9bcda21f4c13be75e3571b0f0ef39e77934b5 (patch) | |
| tree | 54312412f1a9253360db901877e8b51991777562 /net/bridge | |
| parent | e60a9de49c3744aa44128eaaed3aca965911ca2e (diff) | |
| download | linux-45d9bcda21f4c13be75e3571b0f0ef39e77934b5.tar.bz2 | |
netfilter: nf_tables: validate len in nft_validate_data_load()
For values spanning multiple registers, we need to validate that enough
space is available from the destination register onwards. Add a len
argument to nft_validate_data_load() and consolidate the existing length
validations in preparation of that.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/netfilter/nft_meta_bridge.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/bridge/netfilter/nft_meta_bridge.c b/net/bridge/netfilter/nft_meta_bridge.c index 4f02109d708f..2011b89690f7 100644 --- a/net/bridge/netfilter/nft_meta_bridge.c +++ b/net/bridge/netfilter/nft_meta_bridge.c @@ -53,12 +53,14 @@ static int nft_meta_bridge_get_init(const struct nft_ctx *ctx, const struct nlattr * const tb[]) { struct nft_meta *priv = nft_expr_priv(expr); + unsigned int len; int err; priv->key = ntohl(nla_get_be32(tb[NFTA_META_KEY])); switch (priv->key) { case NFT_META_BRI_IIFNAME: case NFT_META_BRI_OIFNAME: + len = IFNAMSIZ; break; default: return nft_meta_get_init(ctx, expr, tb); @@ -69,7 +71,8 @@ static int nft_meta_bridge_get_init(const struct nft_ctx *ctx, if (err < 0) return err; - err = nft_validate_data_load(ctx, priv->dreg, NULL, NFT_DATA_VALUE); + err = nft_validate_data_load(ctx, priv->dreg, NULL, + NFT_DATA_VALUE, len); if (err < 0) return err; |