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CVE-2025-38366

22
FAUCET Score

CVE-2025-38366 is a high-severity vulnerability in the Linux kernel, specifically affecting the LoongArch KVM component. It addresses an array pointer overflow due to insufficient validation of the "num_cpu" parameter from user space, potentially impacting systems utilizing the EIOINTC irqchip. With a CVSS score of 7.8, this local vulnerability could lead to high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.13, < 6.15.5CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
6.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
6.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
4.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 19th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2025-38366

kernel: LoongArch: KVM: Check validity of "num_cpu" from user space

Jul 25, 2025

References

git.kernel.org / stable/c/a3293b4078ee93174f70f36d3ab7618554ce6ab6
Patch
git.kernel.org / stable/c/cc8d5b209e09d3b52bca1ffe00045876842d96ae
Patch