Overview
CVE-2025-53965 is a security vulnerability discovered in a range of Samsung Exynos processors and modems. This flaw affects devices utilizing Exynos 980, 990, 850, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, W920, W930, W1000, Modem 5123, Modem 5300, and Modem 5400. The vulnerability lies in the handling of SOR (Samsung Object Runtime) transparent containers, specifically a lack of proper bounds checking during the decoding process. This can potentially lead to a fatal error and impact device stability.
Technical Details
The core of the issue resides within the function responsible for decoding SOR transparent containers. Insufficient bounds checking during the decoding process allows for a potential buffer overflow. If a malformed or crafted SOR container is processed, the decoding function may attempt to write data beyond the allocated buffer size. This out-of-bounds write can corrupt memory and trigger a system crash or other unexpected behavior.
CVSS Analysis
According to the information available, a CVSS score has not yet been assigned to CVE-2025-53965. Therefore, the severity is currently listed as N/A. A complete CVSS analysis would require further investigation to determine exploitability, attack vector, and potential impact on confidentiality, integrity, and availability.
Possible Impact
The lack of bounds checking in SOR container decoding can lead to the following potential impacts:
- Device Crash: The most likely scenario is a device crash due to memory corruption.
- Denial of Service (DoS): A successful exploit could render the device unusable, resulting in a denial-of-service condition.
- Potential for Code Execution: While not explicitly stated, the possibility of arbitrary code execution cannot be entirely ruled out depending on the specific conditions and attacker capabilities. Exploitation to achieve code execution would be significantly more complex.
Mitigation or Patch Steps
The primary mitigation strategy involves applying the security updates provided by Samsung. Users should regularly check for and install the latest software updates on their devices. Samsung typically releases security patches that address vulnerabilities like CVE-2025-53965.
Specifically:
- Check for System Updates: Navigate to your device’s settings menu and look for “Software Update” or a similar option.
- Install Available Updates: If an update is available, download and install it. Ensure your device is connected to a stable Wi-Fi network and has sufficient battery life.
- Stay Informed: Monitor Samsung’s security updates page and other security news sources for information about new vulnerabilities and patches.
