Commit 6c993779 authored by Alexander Aring's avatar Alexander Aring Committed by Stefan Schmidt
Browse files

ca8210: fix mac_len negative array access 



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

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


Signed-off-by: default avatarStefan Schmidt <stefan@datenfreihafen.org>
parent 044c8bf7

drivers/net/ieee802154/ca8210.c

+2 −0
Original line number Diff line number Diff line
@@ -1913,6 +1913,8 @@ 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;