From c0f38a8c60174368aed1d0f9965d733195f15033 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 3 Sep 2024 01:06:58 +0200 Subject: [PATCH] netfilter: nf_tables: reject expiration higher than timeout Report ERANGE to userspace if user specifies an expiration larger than the timeout. Fixes: 8e1102d5a159 ("netfilter: nf_tables: support timeouts larger than 23 days") Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_api.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index da75bc1de466..6c0c6f8a08a8 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -6930,6 +6930,9 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, &expiration); if (err) return err; + + if (expiration > timeout) + return -ERANGE; } if (nla[NFTA_SET_ELEM_EXPR]) { -- 2.50.1