Medium [CVE-2026-21399] Intel Open Volume Kernel Library: Intel Open Volume Kernel Library: Denial of Service via heap-based buffer overflow
This medium-severity Red Hat Linux advisory covers CVE-2026-21399.
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Summary
Heap-based buffer overflow for the Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R) before version 2.0.2 within Ring 3: User Applications may allow a denial of service. System software adversary with an authenticated user combined with a low complexity attack may enable denial of service.
This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction.
The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts. This attack has low complexity and requires no user interaction, primarily impacting the availability of the system.
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. Red Hat severity: Moderate — CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H).
Weakness: CWE-120.
- < 2.0.2
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
Mitigation checklist
- 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.
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
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