CVE-2025-40133
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
12/11/2025
Last modified:
12/11/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().<br />
<br />
mptcp_active_enable() is called from subflow_finish_connect(),<br />
which is icsk->icsk_af_ops->sk_rx_dst_set() and it&#39;s not always<br />
under RCU.<br />
<br />
Using sk_dst_get(sk)->dev could trigger UAF.<br />
<br />
Let&#39;s use __sk_dst_get() and dst_dev_rcu().