Listen to this Post
How CVE-2026-0074 Works
CVE-2026-0074 resides in the `getPreferredSize` method of LauncherProcessImageListener.kt, a component of Android’s Launcher3 that handles image decoding for the home screen. The vulnerability stems from missing upper‑bound controls on memory usage when processing large images. When a malicious application (or even a crafted image loaded by the launcher) triggers this method with an excessively large image, the method does not validate or resize the image before allocation. As a result, the launcher repeatedly requests memory until the system runs out of resources, causing a local denial‑of‑service (DoS) condition.
No additional privileges are required, and no user interaction is needed for exploitation. Because the flaw exists in the system‑level launcher code, the entire home screen may become unresponsive, and the device may eventually reboot or freeze. The attack is purely local—it cannot be triggered remotely—but its ease of exploitation makes it a significant availability risk for unpatched Android devices.
DailyCVE Form
Platform: Google Android
Version: 14,15,16
Vulnerability: Resource Exhaustion
Severity: Medium/Low
Date: 2026‑06‑01
Prediction: July 2026
What Undercode Say
“Monitor the launcher’s memory usage with `dumpsys meminfo` and enforce image size limits. The fix introduces a 300 MB threshold – any image exceeding that is automatically scaled down.”
Bash/Code examples:
1. Monitor launcher memory usage (watch for runaway consumption)
watch -n 2 "adb shell dumpsys meminfo com.android.launcher3 | grep -E 'Native Heap|Dalvik'"
2. Simulate large image allocation (conceptual PoC – DO NOT RUN ON PRODUCTION)
import android.graphics.BitmapFactory;
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inJustDecodeBounds = true;
BitmapFactory.decodeFile("/path/to/huge.jpg", opts);
// Trigger getPreferredSize with unconstrained dimensions
LauncherProcessImageListener listener = new LauncherProcessImageListener();
listener.getPreferredSize(opts.outWidth, opts.outHeight); // ← vulnerable call
Exploit
An attacker places a specially crafted oversized image (e.g., a 20 000 × 20 000 pixel file) on the device. Any local app that can force the launcher to decode this image—for example, by setting it as a live wallpaper or by calling the launcher’s image‑loading API—triggers getPreferredSize. Because the method lacks size validation, it allocates memory until the system crashes, making the home screen unusable.
Protection
- Apply the official patch from the June 2026 Android Security Bulletin (or later). The fix introduces a `LauncherProcessImageListener` component that enforces a configurable memory threshold (default 300 MB) and automatically down‑scales oversized images.
- Restrict background image loading by disabling third‑party launchers or using Android’s built‑in memory cgroup limits.
- Monitor and restart the launcher if memory consumption exceeds normal thresholds (e.g., with
adb shell am force-stop com.android.launcher3).
Impact
- Local denial of service: The launcher becomes unresponsive; the device may freeze or reboot.
- No privilege escalation: Attacker does not gain any additional permissions.
- No user interaction required: The DoS can be triggered silently by a malicious local app.
- Confidentiality/integrity unaffected: Only availability is impacted.
- Affected versions: Android 14, 15, 16, and 16‑QPR2.
🎯Let’s Practice Exploiting & Learn Patching For Free:
🎓 Live Courses & Certifications:
Join Undercode Academy for Verified Certifications
🚀 Request a Custom Project:
Secure, high-velocity infrastructure and disruptive technological engineering. Contact our engineering team for high-tier development and proprietary systems:
[email protected]
💎 Smart Architecture | 🛡️ Secure by Design | ⭐ Trusted by Thousands
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
