diff mbox series

[net,3/3] netfilter: nf_tables: initialize registers in nft_do_chain()

Message ID 20220317202534.41530-4-pablo@netfilter.org
State Accepted
Delegated to: Pablo Neira
Headers show
Series [net,1/3] netfilter: flowtable: Fix QinQ and pppoe support for inet table | expand

Commit Message

Pablo Neira Ayuso March 17, 2022, 8:25 p.m. UTC 
Initialize registers to avoid stack leak into userspace.

Fixes: 96518518cc41 ("netfilter: add nftables")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nf_tables_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

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);