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The vulnerability CVE-2025-48590 is a local denial-of-service (DoS) flaw within the Android operating system’s Framework component. It resides specifically in the `verifyAndGetBypass` method of the `AppOpsService.java` file. The core technical issue is improper resource management, classified under the common weakness CWE-400 (Uncontrolled Resource Consumption).
The `AppOpsService` is a system service responsible for enforcing application operation (AppOp) permissions. The vulnerable method, verifyAndGetBypass, is involved in checks that may allow certain operations to bypass standard restrictions under specific conditions. A malicious application, running with low privileges and requiring no user interaction, can exploit a logic flaw in this method to trigger resource exhaustion. By repeatedly making crafted requests, the app can cause a sustained denial of service for a critical function: dialing emergency services. This attack is local (AV:L), has low complexity (AC:L), and requires low privileges (PR:L). Successful exploitation does not compromise data confidentiality or integrity (C:N, I:N) but has a high impact on availability (A:H), potentially blocking access to emergency calls under limited circumstances.
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Platform: Google Android
Version: 13.0 14.0
Version: 15.0 16.0
Vulnerability: Resource Exhaustion DoS
Severity: High
date: 2025-12-08
Prediction: 2025-12-05
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Check current Android security patch level adb shell getprop ro.build.version.security_patch Search for mentions of the fix in AOSP source (using the provided commit hash) git log --grep="848f944921756467dba98069ea33531a2f180373" --oneline
// Example code snippet location for audit // platform/frameworks/base/services/core/java/com/android/server/appop/AppOpsService.java // Method: verifyAndGetBypass
how Exploit:
A malicious app with low privileges executes code to repeatedly call the vulnerable `verifyAndGetBypass` method with specific parameters, depleting a key system resource. This exhausts the resource pool needed for emergency dialing operations, causing a local DoS that prevents the device from making emergency calls. No user interaction is required.
Protection from this CVE:
Apply the Android security update with a patch level of 2025-12-05 or later. The fix was committed to the Android Open Source Project (AOSP) repository. Users should install updates provided by their device manufacturer.
Impact:
Local denial of service affecting emergency dialing functionality. High impact on system availability (A:H). No compromise of user data (C:N, I:N).
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Sources:
Reported By: nvd.nist.gov
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