From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
commit 4c905f6740a365464e91467aa50916555b28213d upstream.
Initialize registers to avoid stack leak into userspace.
Fixes: 96518518cc41 ("netfilter: add nftables")
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/netfilter/nf_tables_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/netfilter/nf_tables_core.c
+++ b/net/netfilter/nf_tables_core.c
@@ -144,7 +144,7 @@ nft_do_chain(struct nft_pktinfo *pkt, vo
struct nft_rule *const *rules;
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];
bool genbit = READ_ONCE(net->nft.gencursor);
