From 63519217e8c0682369b5b3dc11417f79b3b48b7e Mon Sep 17 00:00:00 2001
From: Jakub Pawlowski <jpawlowski@google.com>
Date: Thu, 29 Nov 2018 18:54:21 +0100
Subject: [PATCH] Bluetooth: Check descriptors size in
 BluetoothHidDeviceAppSdpSettings

Bug: 119819889
Test: compilation
Change-Id: If51d0e2af74d99758f79a603d40cc2f5c84e4dde
---
 .../bluetooth/BluetoothHidDeviceAppSdpSettings.java      | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/core/java/android/bluetooth/BluetoothHidDeviceAppSdpSettings.java b/core/java/android/bluetooth/BluetoothHidDeviceAppSdpSettings.java
index 237082e4cb664..2f0b44f76ffb3 100644
--- a/core/java/android/bluetooth/BluetoothHidDeviceAppSdpSettings.java
+++ b/core/java/android/bluetooth/BluetoothHidDeviceAppSdpSettings.java
@@ -18,6 +18,7 @@ package android.bluetooth;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.util.EventLog;
 
 
 /**
@@ -30,6 +31,8 @@ import android.os.Parcelable;
  */
 public final class BluetoothHidDeviceAppSdpSettings implements Parcelable {
 
+    private static final int MAX_DESCRIPTOR_SIZE = 2048;
+
     private final String mName;
     private final String mDescription;
     private final String mProvider;
@@ -55,6 +58,12 @@ public final class BluetoothHidDeviceAppSdpSettings implements Parcelable {
         mDescription = description;
         mProvider = provider;
         mSubclass = subclass;
+
+        if (descriptors == null || descriptors.length > MAX_DESCRIPTOR_SIZE) {
+            EventLog.writeEvent(0x534e4554, "119819889", -1, "");
+            throw new IllegalArgumentException("descriptors must be not null and shorter than "
+                    + MAX_DESCRIPTOR_SIZE);
+        }
         mDescriptors = descriptors.clone();
     }