DEBIAN-CVE-2025-40133

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2025-40133
Published: 12 Nov 2025, 11:15
Last modified:28 Apr 2026, 20:30

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Nov 2025, 11:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:30
Last Modified
Vulnerability information updated

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().

Affected Systems

  • debian•linux

    < 6.12.57-1 | < 6.17.6-1

References (1)