From 75bbd2ea50ba1c5d9da878a17e92eac02fe0fd3a Mon Sep 17 00:00:00 2001
From: Peilin Ye <yepeilin.cs@gmail.com>
Date: Fri, 10 Jul 2020 17:39:18 -0400
Subject: [PATCH] Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt()
Git-commit: 75bbd2ea50ba1c5d9da878a17e92eac02fe0fd3a
Patch-mainline: v5.9-rc1
References: bsc#1111666
Check `num_rsp` before using it as for-loop counter.
Cc: stable@vger.kernel.org
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
net/bluetooth/hci_event.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 927bde511170..b97d0247983c 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2517,7 +2517,7 @@ static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
- if (!num_rsp)
+ if (!num_rsp || skb->len < num_rsp * sizeof(*info) + 1)
return;
if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
--
2.16.4