CVE-2025-40133

Publication date

2025-11-12 10:23:22

Family

Linux

State

PUBLISHED

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 its not always under RCU. Using sk_dst_get(sk)->dev could trigger UAF. Lets use __sk_dst_get() and dst_dev_rcu().