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https://github.com/Divested-Mobile/DivestOS-Build.git
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48 lines
2.0 KiB
Diff
48 lines
2.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jing Ji <jji@google.com>
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Date: Tue, 25 Oct 2022 22:39:52 -0700
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Subject: [PATCH] DO NOT MERGE: ActivityManager#killBackgroundProcesses can
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kill caller's own app only
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unless it's a system app.
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Bug: 239423414
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Bug: 223376078
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Test: atest CtsAppTestCases:ActivityManagerTest
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(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:d1c95670b248df945784b0f2830acf83b5682de3)
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Merged-In: Iac6baa889965b8ffecd9a43179a4c96632ad1d02
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AOSP-Change-Id: Iac6baa889965b8ffecd9a43179a4c96632ad1d02
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Change-Id: I41cd6fa1f71e950db18a9fd450355c4e6f80ec7d
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---
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.../server/am/ActivityManagerService.java | 16 ++++++++++++++++
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1 file changed, 16 insertions(+)
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diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
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index 98d7cecd81ca..bcb7276b4014 100644
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--- a/services/core/java/com/android/server/am/ActivityManagerService.java
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+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
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@@ -4217,6 +4217,22 @@ public class ActivityManagerService extends IActivityManager.Stub
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throw new SecurityException(msg);
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}
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+ final int callingUid = Binder.getCallingUid();
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+ final int callingPid = Binder.getCallingPid();
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+
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+ ProcessRecord proc;
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+ synchronized (mPidsSelfLocked) {
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+ proc = mPidsSelfLocked.get(callingPid);
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+ }
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+ if (callingUid >= FIRST_APPLICATION_UID
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+ && (proc == null || !proc.info.isSystemApp())) {
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+ final String msg = "Permission Denial: killAllBackgroundProcesses() from pid="
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+ + callingPid + ", uid=" + callingUid + " is not allowed";
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+ Slog.w(TAG, msg);
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+ // Silently return to avoid existing apps from crashing.
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+ return;
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+ }
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+
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final long callingId = Binder.clearCallingIdentity();
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try {
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synchronized (this) {
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