mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-07-05 19:11:15 +00:00
39 lines
1.5 KiB
Diff
39 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Brian Delwiche <delwiche@google.com>
|
|
Date: Thu, 5 Oct 2023 00:01:03 +0000
|
|
Subject: [PATCH] Fix UAF in ~CallbackEnv
|
|
|
|
com_android_bluetooth_btservice_AdapterService does not null its local
|
|
JNI environment variable after detaching the thread (which frees the
|
|
environment context), allowing UAF under certain conditions.
|
|
|
|
Null the variable in this case.
|
|
|
|
Testing here was done through a custom unit test; see patchsets 4-6 for
|
|
contents. However, unit testing of the JNI layer is problematic in
|
|
production, so that part of the patch is omitted for final merge.
|
|
|
|
Bug: 291500341
|
|
Test: atest bluetooth_test_gd_unit, atest net_test_stack_btm
|
|
Tag: #security
|
|
Ignore-AOSP-First: Security
|
|
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:5f543d919c4067f2f4925580fd8a690ba3440e80)
|
|
Merged-In: I3e5e3c51412640aa19f0981caaa809313d6ad030
|
|
Change-Id: I3e5e3c51412640aa19f0981caaa809313d6ad030
|
|
---
|
|
jni/com_android_bluetooth_btservice_AdapterService.cpp | 1 +
|
|
1 file changed, 1 insertion(+)
|
|
|
|
diff --git a/jni/com_android_bluetooth_btservice_AdapterService.cpp b/jni/com_android_bluetooth_btservice_AdapterService.cpp
|
|
index ecda5ac62..53ff86469 100644
|
|
--- a/jni/com_android_bluetooth_btservice_AdapterService.cpp
|
|
+++ b/jni/com_android_bluetooth_btservice_AdapterService.cpp
|
|
@@ -387,6 +387,7 @@ static void callback_thread_event(bt_cb_thread_evt event) {
|
|
return;
|
|
}
|
|
vm->DetachCurrentThread();
|
|
+ callbackEnv = NULL;
|
|
}
|
|
}
|
|
|