CVE•Published 2025-10-04•Modified 2026-07-30•1 article on news•5 live references•NVD data

CVE-2025-39943Linux · Linux_kernel

Vulnerability data via NVD (ingested)

CVSS v3.1

9.4

CRITICAL

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

EPSS percentile

Exploit Prediction Scoring System · top 96% of all CVEs

Weaknesses (CWE)

CWE-125Out-of-bounds Read

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.

Timeline

Published 2025-10-04

Modified 2026-07-30

External references

NVD MITRE Exploit-DB trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2025-39943

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · OS

os:"Linux Kernel"

Hosts Shodan identified as running Linux Kernel.

More intel sources (5)

Shodan report

vuln:CVE-2025-39943

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2025-39943