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Bluetooth: btintel: Fix null ptr deref in btintel_read_version

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If hci_cmd_sync_complete() is triggered and skb is NULL, then
hdev->req_skb is NULL, which will cause this issue.

Reported-and-tested-by: syzbot+830d9e3fa61968246abd@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Edward Adam Davis 2024-01-18 12:40:34 +08:00 committed by Luiz Augusto von Dentz
parent 9c16d0c8d9
commit b79e040910
1 changed files with 1 additions and 1 deletions
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2
drivers/bluetooth/btintel.c
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@ -435,7 +435,7 @@ int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver)
struct sk_buff *skb; struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT); skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT);
if (IS_ERR(skb)) { if (IS_ERR_OR_NULL(skb)) {
bt_dev_err(hdev, "Reading Intel version information failed (%ld)", bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
PTR_ERR(skb)); PTR_ERR(skb));
return PTR_ERR(skb); return PTR_ERR(skb);