From 4c905f6740a365464e91467aa50916555b28213d Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Thu, 17 Mar 2022 12:04:42 +0100 Subject: netfilter: nf_tables: initialize registers in nft_do_chain() Initialize registers to avoid stack leak into userspace. Fixes: 96518518cc41 ("netfilter: add nftables") Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/netfilter/nf_tables_core.c') diff --git a/net/netfilter/nf_tables_core.c b/net/netfilter/nf_tables_core.c index 36e73f9828c5..8af98239655d 100644 --- a/net/netfilter/nf_tables_core.c +++ b/net/netfilter/nf_tables_core.c @@ -201,7 +201,7 @@ nft_do_chain(struct nft_pktinfo *pkt, void *priv) const struct nft_rule_dp *rule, *last_rule; const struct net *net = nft_net(pkt); const struct nft_expr *expr, *last; - struct nft_regs regs; + struct nft_regs regs = {}; unsigned int stackptr = 0; struct nft_jumpstack jumpstack[NFT_JUMP_STACK_SIZE]; bool genbit = READ_ONCE(net->nft.gencursor); -- cgit v1.2.3