4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pablo Neira Ayuso pablo@netfilter.org
commit 95cd4bca7b1f4a25810f3ddfc5e767fb46931789 upstream.
If userspace requests a feature which is not available the original set definition, then bail out with EOPNOTSUPP. If userspace sends unsupported dynset flags (new feature not supported by this kernel), then report EOPNOTSUPP to userspace. EINVAL should be only used to report malformed netlink messages from userspace.
Fixes: 22fe54d5fefc ("netfilter: nf_tables: add support for dynamic set updates") Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/netfilter/nft_dynset.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/net/netfilter/nft_dynset.c +++ b/net/netfilter/nft_dynset.c @@ -133,7 +133,7 @@ static int nft_dynset_init(const struct u32 flags = ntohl(nla_get_be32(tb[NFTA_DYNSET_FLAGS]));
if (flags & ~NFT_DYNSET_F_INV) - return -EINVAL; + return -EOPNOTSUPP; if (flags & NFT_DYNSET_F_INV) priv->invert = true; } @@ -168,7 +168,7 @@ static int nft_dynset_init(const struct timeout = 0; if (tb[NFTA_DYNSET_TIMEOUT] != NULL) { if (!(set->flags & NFT_SET_TIMEOUT)) - return -EINVAL; + return -EOPNOTSUPP;
err = nf_msecs_to_jiffies64(tb[NFTA_DYNSET_TIMEOUT], &timeout); if (err) @@ -182,7 +182,7 @@ static int nft_dynset_init(const struct
if (tb[NFTA_DYNSET_SREG_DATA] != NULL) { if (!(set->flags & NFT_SET_MAP)) - return -EINVAL; + return -EOPNOTSUPP; if (set->dtype == NFT_DATA_VERDICT) return -EOPNOTSUPP;