Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-46170

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
28/05/2026
Last modified:
11/06/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mptcp: pm: ADD_ADDR rtx: free sk if last<br /> <br /> When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(),<br /> and released at the end.<br /> <br /> If at that moment, it was the last reference being held, the sk would<br /> not be freed. sock_put() should then be called instead of __sock_put().<br /> <br /> But that&amp;#39;s not enough: if it is the last reference, sock_put() will call<br /> sk_free(), which will end up calling sk_stop_timer_sync() on the same<br /> timer, and waiting indefinitely to finish. So it is needed to mark that<br /> the timer is done at the end of the timer handler when it has not been<br /> rescheduled, not to call sk_stop_timer_sync() on "itself".

Impact

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.10 (including) 6.6.142 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.92 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.18.30 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 7.0.7 (excluding)
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools