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tipc: fix a bit overflow in tipc_crypto_key_rcv()

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[ 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 <hbh25y@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hangyu Hua 2022-02-11 12:55:10 +08:00 committed by Greg Kroah-Hartman
parent 1ccc12f224
commit 5340a0924e
1 changed files with 1 additions and 1 deletions
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net/tipc/crypto.c
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@ -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;