CVE-2025-38552

HIGH EPSS 4.2%
Published Aug 16, 202510mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Aug 16, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: plug races between subflow fail and subflow creation We have races similar to the one addressed by the previous patch between subflow failing and additional subflow creation. They are just harder to trigger. The solution is similar. Use a separate flag to track the condition 'socket state prevent any additional subflow creation' protected by the fallback lock. The socket fallback makes such flag true, and also receiving or sending an MP_FAIL option. The field 'allow_infinite_fallback' is now always touched under the relevant lock, we can drop the ONCE annotation on write.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <6.1.149
linuxlinux_kernel*≥6.2  –  <6.6.101
linuxlinux_kernel*≥6.7  –  <6.12.40
linuxlinux_kernel*≥6.13  –  <6.15.8
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
debiandebian_linux11.0any

References 7

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • git.kernel.org https://git.kernel.org/stable/c/659da22dee5ff316ba63bdaeeac7b58b5442f6c2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7c96d519ee15a130842a6513530b4d20acd2bfcd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c476d627584b7589a134a8b48dd5c6639e4401c5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/def5b7b2643ebba696fc60ddf675dca13f073486
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f81b6fbe13c7fc413b5158cdffc6a59391a2a8db
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/659da22dee5ff316ba63bdaeeac7b58b5442f6c2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7c96d519ee15a130842a6513530b4d20acd2bfcd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c476d627584b7589a134a8b48dd5c6639e4401c5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/def5b7b2643ebba696fc60ddf675dca13f073486
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f81b6fbe13c7fc413b5158cdffc6a59391a2a8db
    Patch