PT-2025-46608 · Linux+2 · Linux Kernel+2
Published
2025-09-16
·
Updated
2026-03-13
·
CVE-2025-40133
CVSS v2.0
5.7
Medium
| Vector | AV:L/AC:H/Au:S/C:P/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the
mptcp active enable() function. This function is called from subflow finish connect(), which is part of icsk->icsk af ops->sk rx dst set(). The use of sk dst get(sk)->dev could potentially lead to a Use-After-Free (UAF) condition because it is not always under Read-Copy Update (RCU). The issue is addressed by utilizing sk dst get() and dst dev rcu().Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu