From 35f4fa41a7eafd5bfbc1c440c38e87cf83857762 Mon Sep 17 00:00:00 2001 From: Hangyu Hua Date: Fri, 11 Feb 2022 12:55:10 +0800 Subject: [PATCH] tipc: fix a bit overflow in tipc_crypto_key_rcv() [ Upstream commit 143de8d97d79316590475dc2a84513c63c863ddf ] msg_data_sz return a 32bit value, but size is 16bit. This may lead to a bit overflow. Signed-off-by: Hangyu Hua Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/tipc/crypto.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/tipc/crypto.c b/net/tipc/crypto.c index d293614d5fc65..b5074957e8812 100644 --- a/net/tipc/crypto.c +++ b/net/tipc/crypto.c @@ -2287,7 +2287,7 @@ static bool tipc_crypto_key_rcv(struct tipc_crypto *rx, struct tipc_msg *hdr) struct tipc_crypto *tx = tipc_net(rx->net)->crypto_tx; struct tipc_aead_key *skey = NULL; u16 key_gen = msg_key_gen(hdr); - u16 size = msg_data_sz(hdr); + u32 size = msg_data_sz(hdr); u8 *data = msg_data(hdr); unsigned int keylen;