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bluetooth pull request for net:

Browse source 
- hci: fix null-ptr-deref in hci_read_supported_codecs
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Merge tag 'for-net-2024-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth

Luiz Augusto von Dentz says:

====================
bluetooth pull request for net:

 - hci: fix null-ptr-deref in hci_read_supported_codecs

* tag 'for-net-2024-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
  Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecs
====================

Link: https://patch.msgid.link/20241030192205.38298-1-luiz.dentz@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Paolo Abeni 2024-10-31 11:32:57 +01:00
commit ee802a4954
1 changed files with 11 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
net/bluetooth/hci_sync.c
View file

@ -206,6 +206,12 @@ struct sk_buff *__hci_cmd_sync_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
return ERR_PTR(err);
}
/* If command return a status event skb will be set to NULL as there are
* no parameters.
*/
if (!skb)
return ERR_PTR(-ENODATA);
return skb;
}
EXPORT_SYMBOL(__hci_cmd_sync_sk);
@ -255,6 +261,11 @@ int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
u8 status;
skb = __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout, sk);
/* If command return a status event, skb will be set to -ENODATA */
if (skb == ERR_PTR(-ENODATA))
return 0;
if (IS_ERR(skb)) {
if (!event)
bt_dev_err(hdev, "Opcode 0x%4.4x failed: %ld", opcode,
@ -262,13 +273,6 @@ int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
return PTR_ERR(skb);
}
/* If command return a status event skb will be set to NULL as there are
* no parameters, in case of failure IS_ERR(skb) would have be set to
* the actual error would be found with PTR_ERR(skb).
*/
if (!skb)
return 0;
status = skb->data[0];
kfree_skb(skb);