Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-38552

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
16/08/2025
Last modified:
07/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mptcp: plug races between subflow fail and subflow creation<br /> <br /> We have races similar to the one addressed by the previous patch between<br /> subflow failing and additional subflow creation. They are just harder to<br /> trigger.<br /> <br /> The solution is similar. Use a separate flag to track the condition<br /> &amp;#39;socket state prevent any additional subflow creation&amp;#39; protected by the<br /> fallback lock.<br /> <br /> The socket fallback makes such flag true, and also receiving or sending<br /> an MP_FAIL option.<br /> <br /> The field &amp;#39;allow_infinite_fallback&amp;#39; is now always touched under the<br /> relevant lock, we can drop the ONCE annotation on write.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.15 (including) 6.1.149 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.101 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.40 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.15.8 (excluding)
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools