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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2017-05-01 12:58:50 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2017-05-03 10:58:00 +0200 |
| commit | 9744a6fcefcb4d56501d69adb04c24559d353cad (patch) | |
| tree | 679f52405bc4a0003dc105908b207a31dfd211ff | |
| parent | 1519fccb34371594f6a629bfad69605bc6f9dde3 (diff) | |
| download | linux-9744a6fcefcb4d56501d69adb04c24559d353cad.tar.gz linux-9744a6fcefcb4d56501d69adb04c24559d353cad.tar.bz2 linux-9744a6fcefcb4d56501d69adb04c24559d353cad.zip | |
netfilter: nf_tables: check if same extensions are set when adding elements
If no NLM_F_EXCL is set and the element already exists in the set, make
sure that both elements have the same extensions.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 434c739dfeca..11a96e8dd3cd 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -3749,6 +3749,11 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, err = set->ops->insert(ctx->net, set, &elem, &ext2); if (err) { if (err == -EEXIST) { + if (nft_set_ext_exists(ext, NFT_SET_EXT_DATA) ^ + nft_set_ext_exists(ext2, NFT_SET_EXT_DATA) || + nft_set_ext_exists(ext, NFT_SET_EXT_OBJREF) ^ + nft_set_ext_exists(ext2, NFT_SET_EXT_OBJREF)) + return -EBUSY; if ((nft_set_ext_exists(ext, NFT_SET_EXT_DATA) && nft_set_ext_exists(ext2, NFT_SET_EXT_DATA) && memcmp(nft_set_ext_data(ext), |