CVE-2024-46923 – A missing null pointer check in the Xclipse GPU... (How to Fix)

Q: What is the severity of CVE-2024-46923?

CVE-2024-46923 has a CVSS score of 7.5 (HIGH). A missing null pointer check in the Xclipse GPU driver for Samsung Exynos mobile processors allows attackers to cause denial of service. This affects devices using Exynos 2200, 1480, and 2400 chipsets. The vulnerability is in the amdgpu_cs_ib_fill function and requires local access to exploit.

📋 TL;DR

A missing null pointer check in the Xclipse GPU driver for Samsung Exynos mobile processors allows attackers to cause denial of service. This affects devices using Exynos 2200, 1480, and 2400 chipsets. The vulnerability is in the amdgpu_cs_ib_fill function and requires local access to exploit.

💻 Affected Systems

Products:

Samsung Galaxy S22 series
Samsung Galaxy A54
Samsung Galaxy S24 series
Other devices using Exynos 2200, 1480, or 2400 processors

Versions: All versions prior to security patch containing fix

Operating Systems: Android with affected Exynos chipsets

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects devices with specific Samsung Exynos processors, not all Android devices.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system crash requiring hard reboot, potentially causing data loss or corruption in active processes.

🟠

Likely Case

Temporary denial of service affecting GPU functionality, causing application crashes or system instability.

🟢

If Mitigated

Minimal impact with proper access controls preventing unauthorized local execution.

🌐 Internet-Facing: LOW - Requires local access to exploit, not directly reachable over network.

🏢 Internal Only: MEDIUM - Local attackers or malicious applications could trigger the vulnerability.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Requires local access and ability to execute code targeting the GPU driver interface.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Latest Samsung security updates for affected devices

Vendor Advisory: https://semiconductor.samsung.com/support/quality-support/product-security-updates/

Restart Required: Yes

Instructions:

1. Check for system updates in device settings. 2. Install latest security patch from Samsung. 3. Reboot device after installation.

🔧 Temporary Workarounds

Restrict local code execution

all

Limit installation of untrusted applications and restrict user privileges to reduce attack surface.

🧯 If You Can't Patch

Implement strict application allowlisting to prevent untrusted code execution
Monitor system logs for GPU driver crashes or unusual activity

🔍 How to Verify

Check if Vulnerable:

Check device model and processor in Settings > About phone. If using Exynos 2200, 1480, or 2400, check security patch level.

Check Version:

adb shell getprop ro.build.version.security_patch

Verify Fix Applied:

Verify security patch date is after vulnerability disclosure (check Samsung security bulletins).

📡 Detection & Monitoring

Log Indicators:

GPU driver crashes (amdgpu)
System instability reports
Kernel panic logs related to GPU

Network Indicators:

None - local exploitation only

SIEM Query:

source="android_system" AND ("amdgpu" OR "GPU" OR "Xclipse") AND ("crash" OR "panic" OR "denial")

📊 Metadata

CVE ID: CVE-2024-46923

CVSS v3 Score: 7.5 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE: CWE-400

EPSS Score: 0.21% exploit probability (42.5th percentile)

Published: February 12, 2025

Last Updated: June 20, 2025

🔗 References

https://semiconductor.samsung.com/support/quality-support/product-security-updates/ Vendor Advisory

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