diff options
| author | Laura Garcia Liebana <nevola@gmail.com> | 2016-09-14 15:00:02 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-09-23 09:29:02 +0200 |
| commit | 36b701fae12ac763a568037e4e7c96b5727a8b3e (patch) | |
| tree | 51cf6649e755c9ee786cfdbbd9d03a6d22baf37c /include/net | |
| parent | 2b03bf732488a3c2e920afe22c03b82cb8477e28 (diff) | |
| download | linux-36b701fae12ac763a568037e4e7c96b5727a8b3e.tar.gz | |
netfilter: nf_tables: validate maximum value of u32 netlink attributes
Fetch value and validate u32 netlink attribute. This validation is
usually required when the u32 netlink attributes are being stored in a
field whose size is smaller.
This patch revisits 4da449ae1df9 ("netfilter: nft_exthdr: Add size check
on u8 nft_exthdr attributes").
Fixes: 96518518cc41 ("netfilter: add nftables")
Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/netfilter/nf_tables.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index a7a7cebc8d07..5031e072567b 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -145,6 +145,7 @@ static inline enum nft_registers nft_type_to_reg(enum nft_data_types type) return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE; } +unsigned int nft_parse_u32_check(const struct nlattr *attr, int max, u32 *dest); unsigned int nft_parse_register(const struct nlattr *attr); int nft_dump_register(struct sk_buff *skb, unsigned int attr, unsigned int reg); |