Bug 2570288 (CVE-2026-40426)

Summary: CVE-2026-40426 intel-npu-driver: intel-npu-driver: Denial of Service via integer underflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Intel Neural Processing Unit (NPU) Driver. An integer underflow vulnerability in user-space operations allows an authenticated local user with low privileges to cause a Denial of Service (DoS). Successful exploitation primarily leads to service disruption or system instability, and may also result in limited unauthorized data access or modification.
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Description OSIDB Bzimport 2026-11-10 19:48:25 UTC 
Integer underflow (wrap or wraparound) for the Intel(R) NPU Driver software before version 1.33.0 within Ring 3: User Applications may allow a denial of service. Unprivileged 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 present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.