diff options
| author | Alexander Aring <aahringo@redhat.com> | 2023-02-17 07:25:04 +0300 |
|---|---|---|
| committer | Stefan Schmidt <stefan@datenfreihafen.org> | 2023-03-02 16:39:48 +0300 |
| commit | 6c993779ea1d0cccdb3a5d7d45446dd229e610a3 (patch) | |
| tree | 54c301ced978f09bcf808b6ad6ce1f62f63c007d /drivers/net/ieee802154 | |
| parent | 044c8bf78db818b8c726eb47c560e05fbc71e128 (diff) | |
| download | linux-6c993779ea1d0cccdb3a5d7d45446dd229e610a3.tar.xz | |
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: 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>
Diffstat (limited to 'drivers/net/ieee802154')
| -rw-r--r-- | drivers/net/ieee802154/ca8210.c | 2 |
1 files changed, 2 insertions, 0 deletions
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; |