PT-2025-33599 · Linux+6 · Linux Kernel+6

Published

2025-07-16

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Updated

2026-04-20

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CVE-2025-38552

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)
Description: The Linux kernel contains a flaw related to multi-path TCP (MPTCP) where a race condition can occur between subflow failure and subflow creation. This issue is similar to a previously addressed race condition but more difficult to trigger. The problem arises from concurrent access to socket state during subflow management. A flag, allow infinite fallback, is used to track conditions preventing additional subflow creation, protected by a fallback lock. The socket fallback mechanism and receipt of an MP FAIL option influence this flag.
Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-371

Related Identifiers

AZL-66329
BDU:2025-15803
CVE-2025-38552
DLA-4328-1
DSA-6009-1
ECHO-26D7-387B-AD9F
OPENSUSE-SU-2025:20081-1
SUSE-SU-2025:21040-1
SUSE-SU-2025:21052-1
SUSE-SU-2025:21056-1
SUSE-SU-2025:21064-1
SUSE-SU-2025:21074-1
SUSE-SU-2025:21139-1
SUSE-SU-2025:21179-1
SUSE-SU-2025:4057-1
SUSE-SU-2025:4128-1
SUSE-SU-2025:4132-1
SUSE-SU-2025:4140-1
SUSE-SU-2025:4141-1
SUSE-SU-2025:4301-1
USN-7879-1
USN-7879-2
USN-7879-3
USN-7879-4
USN-7880-1
USN-7934-1
USN-8028-1
USN-8028-2
USN-8028-3
USN-8028-4
USN-8028-5
USN-8028-6
USN-8028-7
USN-8028-8
USN-8031-1
USN-8031-2
USN-8031-3
USN-8052-1
USN-8052-2
USN-8074-1
USN-8074-2
USN-8126-1

Affected Products

Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu