Overview
CVE-2025-58475 is a medium severity vulnerability affecting the libsec-ril.so library in Samsung devices. This vulnerability, discovered and patched in the SMR Dec-2025 Release 1, stems from improper input validation, allowing a local privileged attacker to potentially write out-of-bounds memory. This could lead to a variety of security issues, including denial of service or even arbitrary code execution in privileged contexts.
Technical Details
The vulnerability lies within the libsec-ril.so library, which is likely involved in radio interface layer (RIL) functionality on Samsung devices. The specifics of the vulnerable code path aren’t publicly detailed beyond the provided description. However, the core issue is improper input validation. This means that the library doesn’t adequately check the size or content of data it receives before writing it into memory. A local privileged attacker, potentially through a malicious application or exploit leveraging existing privileges, could craft specific inputs that cause the library to write data beyond the allocated buffer, leading to an out-of-bounds write.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) assigns CVE-2025-58475 a score of 5.6 (MEDIUM). While the specifics of the vector string aren’t provided, the score suggests a local attack vector requiring privileged access.
Key factors contributing to the score likely include:
- Attack Vector: Local (requires access to the device)
- Attack Complexity: Likely low, meaning the vulnerability is relatively easy to exploit once the attacker has the required privileges.
- Privileges Required: High (requires elevated privileges on the device)
- User Interaction: None (the exploit may not require any user interaction)
- Scope: Changed (an exploit could potentially impact other parts of the system)
- Confidentiality Impact: Partial (limited information disclosure possible)
- Integrity Impact: Partial (limited ability to modify data)
- Availability Impact: Partial (potential denial of service)
Possible Impact
The out-of-bounds write vulnerability could have several potential impacts:
- Denial of Service (DoS): By overwriting critical system memory, an attacker could cause the device to crash or become unstable.
- Privilege Escalation: In some scenarios, the out-of-bounds write could be leveraged to overwrite security-sensitive data, potentially allowing an attacker to gain higher privileges on the system.
- Arbitrary Code Execution: While less likely given the medium severity, it’s theoretically possible that a carefully crafted exploit could overwrite code in memory, allowing the attacker to execute arbitrary code with the privileges of the
libsec-ril.soprocess. - Data Corruption: Writing outside the bounds of the intended memory region could corrupt data used by other applications or the system itself.
Mitigation and Patch Steps
The primary mitigation for CVE-2025-58475 is to update your Samsung device to the SMR Dec-2025 Release 1 or later. This security update includes a patch that addresses the improper input validation issue in libsec-ril.so.
To update your device:
- Go to Settings.
- Tap on Software update.
- Tap on Download and install.
- Follow the on-screen instructions to complete the update.
It is highly recommended to apply security updates as soon as they are available to protect your device from potential exploits.
