CVE-2026-33967 in Exynos
Summary
by MITRE • 09/14/2026
An issue was discovered in camera in Samsung Mobile Processor Exynos 1330, 1380, 1480, 2400, 1580, 2500, 2600, and 1680. In the camera driver, an out-of-bounds array access vulnerability in the error-handling path leads to memory corruption.
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Analysis
by VulDB Data Team • 09/14/2026
The identified vulnerability resides within the camera subsystem of Samsung Mobile Processors from the Exynos series, specifically affecting models including the 1330, 1380, 1480, 2400, 1580, 2500, 2600, and 1680. This flaw is classified as an out-of-bounds array access vulnerability that manifests specifically within the error-handling path of the camera driver code. In typical software execution flows, developers often prioritize correctness for successful operations while potentially overlooking rigorous bounds checking in exceptional or failure scenarios. When the camera subsystem encounters a specific condition triggering this error path, the application attempts to access an index in an array that exceeds its allocated memory boundaries. This behavior indicates a fundamental lack of validation checks before indexing into data structures during exception processing routines.
From a technical perspective, out-of-bounds writes are among the most critical classes of memory corruption vulnerabilities because they allow for arbitrary memory modification with relatively predictable control flow implications compared to read-only overflows. By writing data beyond the intended array limits, an attacker can overwrite adjacent memory regions which may contain function pointers, return addresses, or other sensitive kernel structures depending on the specific layout of the driver's memory space. This type of flaw is commonly categorized under CWE-787: Out-of-bounds Write and often aligns with CWE-125: Out-of-bounds Read if the corruption stems from reading invalid data that subsequently influences write operations. The presence of this vulnerability in the error-handling path suggests that the issue may be triggered by specific malformed inputs or hardware states that force the driver into a failure mode, making it potentially exploitable under controlled conditions rather than requiring continuous high-frequency triggering.
The operational impact of such memory corruption is severe and multifaceted. In mobile operating systems like Android, where camera drivers operate with elevated privileges to interact directly with hardware components, successful exploitation can lead to privilege escalation from the application sandbox to the kernel level. This allows an attacker to bypass security boundaries established by the OS, potentially gaining root access or executing arbitrary code within the secure execution environment. Furthermore, memory corruption in critical system services often results in immediate system instability, leading to denial of service conditions where the device may crash, reboot unexpectedly, or exhibit erratic behavior due to corrupted kernel state. The impact extends beyond simple availability loss; it compromises the integrity and confidentiality of user data stored on the device, as a compromised kernel can intercept sensitive information including photos, messages, and authentication tokens processed by the camera subsystem.
Mitigation strategies for this vulnerability primarily involve patching the affected Exynos processor firmware to include proper bounds checking within the error-handling routines of the camera driver. Developers must ensure that all array indices are validated against their maximum allocated sizes before access is attempted, regardless of whether the code path represents a success or failure scenario. Static analysis tools and fuzz testing should be employed during development to identify similar patterns in other drivers where exception handling might lack rigorous input validation. For end-users, applying the latest security patches provided by Samsung for devices utilizing these Exynos chips is essential to close this attack vector. Additionally, enabling hardware-based memory protection features such as ARM Memory Tagging Extension if supported by the specific processor variant can provide an additional layer of defense against exploitation attempts involving out-of-bounds accesses.