From 24b0194ba6ec1215ead01c3b60d84dc0fefcde6a Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Thu, 17 Mar 2022 12:04:42 +0100 Subject: [PATCH] netfilter: nf_tables: initialize registers in nft_do_chain() commit 4c905f6740a365464e91467aa50916555b28213d upstream. Initialize registers to avoid stack leak into userspace. Fixes: 96518518cc41 ("netfilter: add nftables") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Greg Kroah-Hartman --- net/netfilter/nf_tables_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nf_tables_core.c b/net/netfilter/nf_tables_core.c index 9d593ecd8e87..fb14082151ce 100644 --- a/net/netfilter/nf_tables_core.c +++ b/net/netfilter/nf_tables_core.c @@ -127,7 +127,7 @@ nft_do_chain(struct nft_pktinfo *pkt, void *priv) const struct net *net = pkt->net; const struct nft_rule *rule; 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]; struct nft_stats *stats;