DivestOS/Patches/LineageOS-11.0/android_packages_apps_Bluetooth/264098.patch

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From 0cf201d4e94528a997efc74e8937d3950d8c9ed9 Mon Sep 17 00:00:00 2001
From: Cheney Ni <cheneyni@google.com>
Date: Fri, 23 Aug 2019 23:05:19 +0800
Subject: [PATCH] AdapterService: Check the PIN code length before using
The length is assigned by the framework. We should be better to check
again before using, and dropped any unexcepted input.
Bug: 139287605
Test: PoC, atest -t BluetoothInstrumentationTests:com.android.bluetooth.btservice
Change-Id: Ie2dd01e0b192e7ed1fe4b464618ddfa415dbf15c
(cherry picked from commit d6c84aa34962333448e0ed8e4ddbc9de8b73c5ac)
---
.../android/bluetooth/btservice/AdapterService.java | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/com/android/bluetooth/btservice/AdapterService.java b/src/com/android/bluetooth/btservice/AdapterService.java
index a6d0b1cb2..0e4845f71 100644
--- a/src/com/android/bluetooth/btservice/AdapterService.java
+++ b/src/com/android/bluetooth/btservice/AdapterService.java
@@ -1457,6 +1457,12 @@ boolean setPin(BluetoothDevice device, boolean accept, int len, byte[] pinCode)
return false;
}
+ if (pinCode.length != len) {
+ android.util.EventLog.writeEvent(0x534e4554, "139287605", -1,
+ "PIN code length mismatch");
+ return false;
+ }
+
byte[] addr = Utils.getBytesFromAddress(device.getAddress());
return pinReplyNative(addr, accept, len, pinCode);
}
@@ -1468,6 +1474,12 @@ boolean setPasskey(BluetoothDevice device, boolean accept, int len, byte[] passk
return false;
}
+ if (passkey.length != len) {
+ android.util.EventLog.writeEvent(0x534e4554, "139287605", -1,
+ "Passkey length mismatch");
+ return false;
+ }
+
byte[] addr = Utils.getBytesFromAddress(device.getAddress());
return sspReplyNative(addr, AbstractionLayer.BT_SSP_VARIANT_PASSKEY_ENTRY, accept,
Utils.byteArrayToInt(passkey));