AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2023-3866

HIGH · CVSS 7.5 EPSS 15.72%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-08-16 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It affects Linux. Its EPSS score suggests a 15.7% probability of exploitation in the next 30 days.

CVE
CVE-2023-3866
Severity
HIGH
CVSS
7.5
EPSS
15.72%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate session id and tree id in the compound request This patch validate session id and tree id in compound request. If first operation in the compound is SMB2 ECHO request, ksmbd bypass session and tree validation. So work->sess and work->tcon could be NULL. If secound request in the compound access work->sess or tcon, It cause NULL pointer dereferecing error.

Related CVEs

Other vulnerabilities affecting the same vendor(s)