CVE-2025-52516 Overview
An invalid kernel address dereference vulnerability has been discovered in the Camera subsystem of Samsung Mobile and Wearable Processor Exynos chipsets. The flaw exists in the issimian device driver and allows a local attacker to trigger a denial of service condition by causing the kernel to dereference an invalid memory address. This vulnerability affects a wide range of Samsung Exynos processors used in mobile devices and wearables.
Critical Impact
Local attackers can cause a system crash or denial of service by exploiting the invalid kernel address dereference in the issimian camera device driver, potentially disrupting device availability.
Affected Products
- Samsung Mobile Processor Exynos 1330
- Samsung Mobile Processor Exynos 1380
- Samsung Mobile Processor Exynos 1480
- Samsung Mobile Processor Exynos 1580
- Samsung Mobile Processor Exynos 2400
- Samsung Mobile Processor Exynos 2500
- Samsung Wearable Processor Exynos (affected variants)
Discovery Timeline
- 2026-01-05 - CVE-2025-52516 published to NVD
- 2026-01-08 - Last updated in NVD database
Technical Details for CVE-2025-52516
Vulnerability Analysis
This vulnerability is classified under CWE-822 (Untrusted Pointer Dereference), indicating that the issimian camera device driver improperly handles pointer validation before dereferencing kernel memory addresses. The flaw allows an attacker with local access to supply or trigger an invalid kernel address that the driver attempts to dereference, resulting in a kernel panic or system crash.
The vulnerability requires local access to exploit, meaning an attacker would need either physical access to the device or the ability to execute code locally. No privileges are required to trigger the vulnerability, and no user interaction is necessary. While the vulnerability does not allow for information disclosure or code execution, it can cause complete denial of service by crashing the kernel.
Root Cause
The root cause of this vulnerability is an untrusted pointer dereference (CWE-822) within the issimian device driver code. The driver fails to properly validate kernel addresses before attempting to dereference them. When an invalid or malicious address is processed, the kernel attempts to access memory at an invalid location, resulting in a crash. This represents a failure in input validation and memory address sanitization within the camera subsystem's kernel driver.
Attack Vector
The attack vector is local, requiring an attacker to have the ability to execute code on the target device. The attack complexity is low, as exploitation does not require specialized conditions or significant technical expertise beyond triggering the vulnerable code path. An attacker could potentially craft malicious input to the camera subsystem or trigger specific driver operations that cause the invalid pointer dereference.
The vulnerability is exploited through interactions with the issimian device driver in the camera subsystem. Technical details regarding the specific exploitation mechanism can be found in the Samsung CVE-2025-52516 Advisory.
Detection Methods for CVE-2025-52516
Indicators of Compromise
- Unexpected device crashes or reboots, particularly when camera functionality is accessed
- Kernel panic logs referencing the issimian driver or camera subsystem
- System log entries indicating invalid memory access or null pointer dereference events
- Repeated device instability following camera-related operations
Detection Strategies
- Monitor system logs for kernel panic events associated with the camera driver or issimian module
- Implement anomaly detection for unexpected system reboots or crashes on Exynos-powered devices
- Review kernel crash dumps for indicators of invalid address dereference in camera-related kernel modules
- Deploy endpoint monitoring solutions to detect exploitation attempts targeting the camera subsystem
Monitoring Recommendations
- Enable comprehensive kernel logging to capture detailed crash information
- Configure device management solutions to alert on repeated crash events
- Monitor for unusual patterns of camera driver access or initialization failures
- Implement SentinelOne Singularity for endpoint visibility and crash event correlation on managed mobile and IoT devices
How to Mitigate CVE-2025-52516
Immediate Actions Required
- Apply firmware updates from Samsung that address CVE-2025-52516 as soon as they become available
- Monitor the Samsung Product Security Updates page for patch releases
- Restrict physical access to affected devices to minimize local attack opportunities
- Consider disabling or restricting camera functionality on critical devices until patches are applied
Patch Information
Samsung has published security information regarding this vulnerability. Device manufacturers and users should consult the Samsung CVE-2025-52516 Advisory for official patch information and firmware update guidance. Patches are typically distributed through device OEMs as part of regular security update cycles for devices using affected Exynos processors.
Workarounds
- Limit camera application access on affected devices to trusted applications only
- Implement application whitelisting to prevent unauthorized software from interacting with the camera driver
- Use mobile device management (MDM) solutions to restrict camera functionality on enterprise devices until patches are applied
- Monitor device stability and report any unusual crashes to IT security teams for investigation
Consult the official Samsung security advisory for vendor-recommended mitigations and workaround guidance specific to your device configuration.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
