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CVE-2026-46158

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
28/05/2026
Last modified:
09/06/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mptcp: pm: ADD_ADDR rtx: always decrease sk refcount<br /> <br /> When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer().<br /> It should then be released in all cases at the end.<br /> <br /> Some (unlikely) checks were returning directly instead of calling<br /> sock_put() to decrease the refcount. Jump to a new &amp;#39;exit&amp;#39; label to call<br /> __sock_put() (which will become sock_put() in the next commit) to fix<br /> this potential leak.<br /> <br /> While at it, drop the &amp;#39;!msk&amp;#39; check which cannot happen because it is<br /> never reset, and explicitly mark the remaining one as "unlikely".

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