Heap-based buffer overflow in Intel Open Volume Kernel Library Open VKL) library…
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R) | before version 2.0.2 | — | No fix listed | CNA |
- Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R) Vendor— Affected before version 2.0.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-21399
- 2026-10-03 Alias added: GHSA-89w3-r78p-gf49
- 2026-10-16 CVSS score added · NVD
References
Sources
- CVE-2026-21399 · CVE Program
- CVE-2026-21399 · NVD
- FIRST EPSS
- GHSA-89w3-r78p-gf49 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-21399 · Red Hat security data · CC BY 4.0
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