AUGUST 4, 2026
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Case File

CVE-2025-40133

HIGH · CVSS 8.1 EPSS 0.47%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-11-12 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.1. It affects Linux.

CVE
CVE-2025-40133
Severity
HIGH
CVSS
8.1
EPSS
0.47%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable(). mptcp_active_enable() is called from subflow_finish_connect(), which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not always under RCU. Using sk_dst_get(sk)->dev could trigger UAF. Let's use __sk_dst_get() and dst_dev_rcu().