Review reviewHigh

CVE-2025-38366

Linux Linux, linux kernel

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.

CVSS
7.8
EPSS
0.14%
4.19% percentile
CISA KEV
Not listed
Published
2025.07.25
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7.8

Vulnerability overview

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.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 1ad7efa552fd5cf4e8c49fea863c5c6a5dcf9f00 < a3293b4078ee93174f70f36d3ab7618554ce6ab6, >= 1ad7efa552fd5cf4e8c49fea863c5c6a5dcf9f00 < cc8d5b209e09d3b52bca1ffe00045876842d96ae, >= 6.13, >= 6.13 < 6.15.5, 6.16
Fixed versions
6.15.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2025-38366 — Linux Linux, linux kernel | SECUFOCUS NOW