Commit 4c905f67 authored by Pablo Neira Ayuso's avatar Pablo Neira Ayuso
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netfilter: nf_tables: initialize registers in nft_do_chain() 



Initialize registers to avoid stack leak into userspace.

Fixes: 96518518 ("netfilter: add nftables")
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 6e1acfa3

net/netfilter/nf_tables_core.c

+1 −1
Original line number Diff line number Diff line
@@ -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);