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| author | Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> | 2022-12-12 05:08:28 -0800 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2023-01-17 15:50:10 -0800 |
| commit | 2185e0fdbb2137f22a9dd9fcbf6481400d56299b (patch) | |
| tree | 10109024e42061c9c3f596951f1faf0401c842a1 /net | |
| parent | 1f3bd64ad921f051254591fbed04fd30b306cde6 (diff) | |
| download | linux-2185e0fdbb2137f22a9dd9fcbf6481400d56299b.tar.bz2 | |
Bluetooth: Fix a buffer overflow in mgmt_mesh_add()
Smatch Warning:
net/bluetooth/mgmt_util.c:375 mgmt_mesh_add() error: __memcpy()
'mesh_tx->param' too small (48 vs 50)
Analysis:
'mesh_tx->param' is array of size 48. This is the destination.
u8 param[sizeof(struct mgmt_cp_mesh_send) + 29]; // 19 + 29 = 48.
But in the caller 'mesh_send' we reject only when len > 50.
len > (MGMT_MESH_SEND_SIZE + 31) // 19 + 31 = 50.
Fixes: b338d91703fa ("Bluetooth: Implement support for Mesh")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Signed-off-by: Brian Gix <brian.gix@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/mgmt_util.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/bluetooth/mgmt_util.h b/net/bluetooth/mgmt_util.h index 6a8b7e84293d..bdf978605d5a 100644 --- a/net/bluetooth/mgmt_util.h +++ b/net/bluetooth/mgmt_util.h @@ -27,7 +27,7 @@ struct mgmt_mesh_tx { struct sock *sk; u8 handle; u8 instance; - u8 param[sizeof(struct mgmt_cp_mesh_send) + 29]; + u8 param[sizeof(struct mgmt_cp_mesh_send) + 31]; }; struct mgmt_pending_cmd { |