Is CVE-2025-38366 in the CISA KEV catalog?

No. CVE-2025-38366 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-38366?

CVE-2025-38366 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2025-38366?

CVE-2025-38366 has an EPSS score of 0.14% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-38366?

Upgrade linux kernel to 6.15.5 or later.

CVE & CISA-KEV Catalog

CVE-2025-38366

HIGH

7.8

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Check validity of "num_cpu" from user space The maximum supported cpu number is EIOINTC_ROUTE_MAX_VCPUS about irqchip EIOINTC, here add validation about cpu number to avoid array pointer overflow.

How to fix

Remediation Available

linux kernelNVD

Affected:>= 6.13, < 6.15.5Fixed in:6.15.5CVE-2025-38366derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.14%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Patch2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-18.