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| author | Alexander Aring <aahringo@redhat.com> | 2023-02-16 23:25:04 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-04-05 11:23:38 +0200 |
| commit | 7df72bedbdd1d02bb216e1f6eca0a16900238c4e (patch) | |
| tree | 929cc45cb527c1f5b361f03e6ad8188fb1eff5c0 | |
| parent | 3d8fafc5308f7657f93b9514556960936c79917c (diff) | |
| download | linux-stable-7df72bedbdd1d02bb216e1f6eca0a16900238c4e.tar.gz linux-stable-7df72bedbdd1d02bb216e1f6eca0a16900238c4e.tar.bz2 linux-stable-7df72bedbdd1d02bb216e1f6eca0a16900238c4e.zip | |
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>
| -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 95ef3b6f98dd..5beb447529f9 100644 --- a/drivers/net/ieee802154/ca8210.c +++ b/drivers/net/ieee802154/ca8210.c @@ -1956,6 +1956,8 @@ 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; |