Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-46137

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
28/05/2026
Last modified:
30/05/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mptcp: pm: ADD_ADDR rtx: fix potential data-race<br /> <br /> This mptcp_pm_add_timer() helper is executed as a timer callback in<br /> softirq context. To avoid any data races, the socket lock needs to be<br /> held with bh_lock_sock().<br /> <br /> If the socket is in use, retry again soon after, similar to what is done<br /> with the keepalive timer.

Impact

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

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
9.80
Severity 3.x
CRITICAL

References to Advisories, Solutions, and Tools