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The vulnerability resides in the `updateState` method of GraphicsDriverEnableAngleAsSystemDriverController.java. The ANGLE (Almost Native Graphics Layer Engine) driver is responsible for translating OpenGL ES calls to the underlying graphics API; its state controller manages transition between different graphics operation modes. The flaw stems from an improper input validation within the System component. Specifically, when the driver processes a state update request, it fails to adequately sanitize or validate the incoming parameters, leading to a persistent denial-of-service (DoS) condition. Because the issue is triggered by an “unusual root cause” — likely a logic error in the state machine handling — the driver can be forced into an invalid or undefined state.
Once the vulnerable code path is executed, the graphics driver becomes permanently unresponsive. The device does not automatically recover; a full system reboot is required to restore functionality. In severe cases, the persistent DoS may even force a factory reset if the driver state cannot be cleared through normal rebooting. The vulnerability is triggered locally without any special privileges — any installed application can invoke the affected `updateState` routine simply by interacting with the graphics subsystem. No user interaction (e.g., clicking a link or granting permissions) is necessary.
The issue affects Android versions 14, 15, 16, and 16-qpr2 (the quarterly platform release for Android 16). Google has assigned CWE-20 (Improper Input Validation) to the flaw, but the CVSS official score is still being calculated by NVD. Independent assessors have given it a CVSS score of 5.5 (MEDIUM) with the vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. As of June 2, 2026, no public exploit code is available, and the CISA Known Exploited Vulnerabilities (KEV) catalog does not include this issue. The Android security bulletin for June 2026 provides the official patch.
DailyCVE Form:
Platform: Android
Version: 14-16
Vulnerability: Persistent DoS
Severity: Medium
Date: 2026-06-01
Prediction: June 2026 update
What Undercode Say:
Analytics show the following reconnaissance and exploitation patterns:
Check for ANGLE driver version on a live device adb shell dumpsys graphics | grep "ANGLE" Attempt to trigger the persistent DoS by calling updateState with malformed input adb shell am broadcast -a android.intent.action.DRIVER_UPDATE_STATE --es update "corrupt" Monitor kernel logs for driver crash signatures adb logcat | grep -E "GraphicsDriverEnableAngle|updateState|Fatal signal" Verify if the device is vulnerable after June 2026 patch is applied adb shell getprop ro.build.version.security_patch | grep "2026-06"
Exploit:
A local malicious application calls `updateState` on `GraphicsDriverEnableAngleAsSystemDriverController` with a specially crafted, out-of-bounds parameter that the driver does not validate. This sends the internal state machine into an undefined transition, causing the graphics stack to hang indefinitely. Because the driver crash is persistent, the device becomes completely unresponsive to any graphics requests, effectively denying service to all user and system processes that rely on the GPU (e.g., UI rendering, media playback, camera preview). No special privileges or user interaction are required; the mere execution of the vulnerable method from any installed app is sufficient.
Protection:
- Apply the June 2026 Android security bulletin patch immediately. The fix adds proper input validation and state‑transition guards within
updateState. - If a patch is not yet available, reboot the device as soon as it becomes unresponsive. Avoid running untrusted applications or graphics‑heavy workloads.
- Restrict installation of third‑party apps from unknown sources, and consider using a mobile threat defense solution that monitors for abnormal driver behavior.
- Enterprises can blacklist the specific ANGLE driver module until the patch is deployed.
Impact:
Successful exploitation leads to a complete local denial of service of the Android device. The GUI freezes, and the device no longer responds to touch, buttons, or system calls that require graphics output. While the device can be recovered with a reboot, repeated attacks render it unusable. As no confidentiality or integrity is compromised, the impact is strictly on availability. The persistence of the issue—surviving a reboot until the driver is re‑initialized—makes it particularly disruptive for users relying on their devices for critical tasks.
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Sources:
Reported By: nvd.nist.gov
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