CVE-2026-46137 Details
Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock(). If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.
A potential data-race vulnerability has been identified in the Linux kernel's Multipath TCP (MPTCP) implementation. The issue arises in the 'mptcp_pm_add_timer()' function, which is called as a timer callback in softirq context. To prevent data races, the socket lock must be acquired using 'bh_lock_sock()'. If the socket is currently in use, the function should retry shortly after, similar to the behavior of the keepalive timer. This vulnerability affects the Linux kernel stable tree.
Users can upgrade to the latest version of the Linux kernel stable tree, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/013dcdc1961543b9a3433466bc8c79a2f4ca75b5 | kernel.org | Patch |
| https://git.kernel.org/stable/c/23079e0b7742ec114d3507c3e3aad01b7b69e4af | kernel.org | Patch |
| https://git.kernel.org/stable/c/2ad56e434199ca24a812bb353667aa1c3860f513 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d | kernel.org | Patch |
| https://git.kernel.org/stable/c/6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b35605e1f1e877038c8c9d499babbc891cdd234f | kernel.org | Patch |
| https://git.kernel.org/stable/c/cc3c0399361efaaf7ae64262eb3f70829b1189c6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d9b272a85fe6b8f993e37915311e4038c814a533 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-362 | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.10, < 5.10.259 >= 5.11, < 5.15.210 >= 5.16, < 6.1.176 >= 6.2, < 6.6.141 >= 6.7, < 6.12.91 >= 6.13, < 6.18.30 >= 6.19, < 7.0.7 7.1 rc1 7.1 rc2 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 24, 2026 | Initial Analysis | [email protected] |
| Jun 19, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 30, 2026 | CVE Modified | kernel.org |
| May 28, 2026 | New CVE Received | kernel.org |