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2185e0fdbb
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: b338d91703 ("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>
80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
/*
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BlueZ - Bluetooth protocol stack for Linux
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Copyright (C) 2015 Intel Coropration
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation;
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
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COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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SOFTWARE IS DISCLAIMED.
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*/
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struct mgmt_mesh_tx {
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struct list_head list;
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int index;
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size_t param_len;
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struct sock *sk;
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u8 handle;
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u8 instance;
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u8 param[sizeof(struct mgmt_cp_mesh_send) + 31];
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};
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struct mgmt_pending_cmd {
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struct list_head list;
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u16 opcode;
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int index;
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void *param;
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size_t param_len;
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struct sock *sk;
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struct sk_buff *skb;
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void *user_data;
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int (*cmd_complete)(struct mgmt_pending_cmd *cmd, u8 status);
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};
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struct sk_buff *mgmt_alloc_skb(struct hci_dev *hdev, u16 opcode,
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unsigned int size);
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int mgmt_send_event_skb(unsigned short channel, struct sk_buff *skb, int flag,
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struct sock *skip_sk);
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int mgmt_send_event(u16 event, struct hci_dev *hdev, unsigned short channel,
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void *data, u16 data_len, int flag, struct sock *skip_sk);
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int mgmt_cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status);
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int mgmt_cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status,
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void *rp, size_t rp_len);
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struct mgmt_pending_cmd *mgmt_pending_find(unsigned short channel, u16 opcode,
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struct hci_dev *hdev);
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struct mgmt_pending_cmd *mgmt_pending_find_data(unsigned short channel,
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u16 opcode,
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struct hci_dev *hdev,
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const void *data);
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void mgmt_pending_foreach(u16 opcode, struct hci_dev *hdev,
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void (*cb)(struct mgmt_pending_cmd *cmd, void *data),
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void *data);
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struct mgmt_pending_cmd *mgmt_pending_add(struct sock *sk, u16 opcode,
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struct hci_dev *hdev,
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void *data, u16 len);
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struct mgmt_pending_cmd *mgmt_pending_new(struct sock *sk, u16 opcode,
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struct hci_dev *hdev,
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void *data, u16 len);
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void mgmt_pending_free(struct mgmt_pending_cmd *cmd);
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void mgmt_pending_remove(struct mgmt_pending_cmd *cmd);
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void mgmt_mesh_foreach(struct hci_dev *hdev,
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void (*cb)(struct mgmt_mesh_tx *mesh_tx, void *data),
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void *data, struct sock *sk);
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struct mgmt_mesh_tx *mgmt_mesh_find(struct hci_dev *hdev, u8 handle);
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struct mgmt_mesh_tx *mgmt_mesh_next(struct hci_dev *hdev, struct sock *sk);
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struct mgmt_mesh_tx *mgmt_mesh_add(struct sock *sk, struct hci_dev *hdev,
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void *data, u16 len);
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void mgmt_mesh_remove(struct mgmt_mesh_tx *mesh_tx);
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