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082bc48c32
https://review.lineageos.org/q/topic:P_asb_2022-05 https://review.lineageos.org/q/topic:P_asb_2022-06 https://review.lineageos.org/q/topic:P_asb_2022-07 https://review.lineageos.org/q/topic:P_asb_2022-08 https://review.lineageos.org/q/topic:P_asb_2022-09 https://review.lineageos.org/q/topic:P_asb_2022-10 https://review.lineageos.org/q/topic:P_asb_2022-11 https://review.lineageos.org/q/topic:P_asb_2022-12 https://review.lineageos.org/q/topic:P_asb_2023-01 https://review.lineageos.org/q/topic:P_asb_2023-02 https://review.lineageos.org/q/topic:P_asb_2023-03 https://review.lineageos.org/q/topic:P_asb_2023-04 https://review.lineageos.org/q/topic:P_asb_2023-05 https://review.lineageos.org/q/topic:P_asb_2023-06 https://review.lineageos.org/q/topic:P_asb_2023-07 accounted for via manifest change: https://review.lineageos.org/c/LineageOS/android_external_freetype/+/361250 https://review.lineageos.org/q/topic:P_asb_2023-08 accounted for via manifest change: https://review.lineageos.org/c/LineageOS/android_external_freetype/+/364606 accounted for via patches: https://review.lineageos.org/c/LineageOS/android_system_ca-certificates/+/365328 https://review.lineageos.org/q/topic:P_asb_2023-09 https://review.lineageos.org/q/topic:P_asb_2023-10 https://review.lineageos.org/q/topic:P_asb_2023-11 accounted for via patches: https://review.lineageos.org/c/LineageOS/android_system_ca-certificates/+/374916 https://review.lineageos.org/q/topic:P_asb_2023-12 https://review.lineageos.org/q/topic:P_asb_2024-01 https://review.lineageos.org/q/topic:P_asb_2024-02 https://review.lineageos.org/q/topic:P_asb_2024-03 https://review.lineageos.org/q/topic:P_asb_2024-04 Signed-off-by: Tavi <tavi@divested.dev>
47 lines
2.2 KiB
Diff
47 lines
2.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Oli Lan <olilan@google.com>
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Date: Mon, 8 Aug 2022 13:31:36 +0100
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Subject: [PATCH] RESTRICT AUTOMERGE Prevent non-admin users from deleting
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system apps.
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This addresses a security issue where the guest user can remove updates
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for system apps.
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With this CL, attempts to uninstall/downgrade system apps will fail if
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attempted by a non-admin user, unless the DELETE_SYSTEM_APP flag is
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specified.
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This is a fixed version of ag/17400663, to address b/236578018.
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Bug: 170646036
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Test: manual, try uninstalling system app update as guest
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Change-Id: I5eab215cba6528aa4316ed7b20bee544915c1486
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(cherry picked from commit 7fdc96aef4e098d2271ac3a8557bd8e1ad6827f3)
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Merged-In: I5eab215cba6528aa4316ed7b20bee544915c1486
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---
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.../com/android/server/pm/PackageManagerService.java | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
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index dc44fe17722d..c873f82d740c 100644
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--- a/services/core/java/com/android/server/pm/PackageManagerService.java
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+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
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@@ -18476,6 +18476,17 @@ public class PackageManagerService extends IPackageManager.Stub
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return PackageManager.DELETE_FAILED_INTERNAL_ERROR;
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}
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+ if (isSystemApp(uninstalledPs)
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+ && (deleteFlags & PackageManager.DELETE_SYSTEM_APP) == 0) {
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+ UserInfo userInfo = sUserManager.getUserInfo(userId);
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+ if (userInfo == null || !userInfo.isAdmin()) {
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+ Slog.w(TAG, "Not removing package " + packageName
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+ + " as only admin user may downgrade system apps");
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+ EventLog.writeEvent(0x534e4554, "170646036", -1, packageName);
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+ return PackageManager.DELETE_FAILED_USER_RESTRICTED;
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+ }
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+ }
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+
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// Static shared libs can be declared by any package, so let us not
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// allow removing a package if it provides a lib others depend on.
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pkg = mPackages.get(packageName);
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