CVE-2026-21399
Description
A flaw was found in the Intel Open Volume Kernel Library (Intel Open VKL). This heap-based buffer overflow vulnerability, present in user applications, could allow an authenticated local attacker to trigger a denial of service. This attack has low complexity and requires no user interaction, primarily impacting the availability of the system.
Statement
A heap-based buffer overflow flaw was found in the Intel Open Volume Kernel Library (Open VKL) before version 2.0.2 within Ring 3 user space applications. Due to improper bounds checking during volume processing, an authenticated local attacker with low privileges can pass malformed volumetric data to an application using the Open VKL API. This triggers a heap memory write beyond allocated boundaries, leading to application instability, localized data integrity degradation, or a localized denial of service via process crashes.
Mitigation
To mitigate this vulnerability, application administrators can restrict local execution permissions for binaries linking against vulnerable Intel Open VKL library versions, or run affected volume rendering workloads inside isolated container environments.
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of the product's implicit security policy. This can often be used to subvert any other security service.
Availability
Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the product into an infinite loop.
Frequently Asked Questions
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