Commit 5da4469a authored Feb 16, 2023 by Alexander Aring Committed by Greg Kroah-Hartman Apr 05, 2023

ca8210: fix mac_len negative array access



[ Upstream commit 6c993779ea1d0cccdb3a5d7d45446dd229e610a3 ]

This patch fixes a buffer overflow access of skb->data if
ieee802154_hdr_peek_addrs() fails.

Reported-by: lianhui tang <bluetlh@gmail.com>
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20230217042504.3303396-1-aahringo@redhat.com


Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent fea40035

drivers/net/ieee802154/ca8210.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1954,6 +1954,8 @@ static int ca8210_skb_tx(
		* packet
		*/
		mac_len = ieee802154_hdr_peek_addrs(skb, &header);
		if (mac_len < 0)
		return mac_len;

		secspec.security_level = header.sec.level;
		secspec.key_id_mode = header.sec.key_id_mode;