SecurityException in ImportKeysActivity

4.2.1

java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=94211, result=-1, data=Intent { dat=content://media/external/file/3662 }} to activity {org.sufficientlysecure.keychain/org.sufficientlysecure.keychain.ui.ImportKeysActivity}: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/file/3662 from pid=11165, uid=10155 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
	at android.app.ActivityThread.deliverResults(ActivityThread.java:4094)
	at android.app.ActivityThread.handleSendResult(ActivityThread.java:4137)
	at android.app.ActivityThread.-wrap20(ActivityThread.java)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1529)
	at android.os.Handler.dispatchMessage(Handler.java:102)
	at android.os.Looper.loop(Looper.java:154)
	at android.app.ActivityThread.main(ActivityThread.java:6123)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
Caused by: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/file/3662 from pid=11165, uid=10155 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
	at android.os.Parcel.readException(Parcel.java:1683)
	at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:183)
	at android.database.DatabaseUtils.readExceptionWithFileNotFoundExceptionFromParcel(DatabaseUtils.java:146)
	at android.content.ContentProviderProxy.openTypedAssetFile(ContentProviderNative.java:692)
	at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1145)
	at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:982)
	at android.content.ContentResolver.openInputStream(ContentResolver.java:702)
	at org.sufficientlysecure.keychain.util.FileHelper.isEncryptedFile(FileHelper.java:233)
	at org.sufficientlysecure.keychain.ui.ImportKeysFileFragment.startImportingKeys(ImportKeysFileFragment.java:146)
	at org.sufficientlysecure.keychain.ui.ImportKeysFileFragment.onActivityResult(ImportKeysFileFragment.java:133)
	at android.support.v4.app.FragmentActivity.onActivityResult(FragmentActivity.java:167)
	at org.sufficientlysecure.keychain.ui.ImportKeysActivity.onActivityResult(ImportKeysActivity.java:320)
	at android.app.Activity.dispatchActivityResult(Activity.java:6931)
	at android.app.ActivityThread.deliverResults(ActivityThread.java:4090)
	... 9 more