From: Alexander Aring <aahringo@redhat.com>
To: linux-wpan@vger.kernel.org
Cc: bluetlh@gmail.com
Subject: [PATCH wpan] ca8210: fix mac_len negative array access
Date: Thu, 16 Feb 2023 23:25:04 -0500 [thread overview]
Message-ID: <20230217042504.3303396-1-aahringo@redhat.com> (raw)
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>
---
drivers/net/ieee802154/ca8210.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c
index e1a569b99e4a..0b0c6c0764fe 100644
--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -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;
--
2.31.1
next reply other threads:[~2023-02-17 4:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-17 4:25 Alexander Aring [this message]
2023-02-18 15:27 ` [PATCH wpan] ca8210: fix mac_len negative array access Stefan Schmidt
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