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Vulnerability record · CVE-2026-46137 · published 28 May 2026

CVE-2026-46137: Linux kernel race condition vulnerability

Linux · Linux Kernel

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.

9.8 CVSS 3.1 Critical EPSS 0.58% · top 54.3% CWE-362 · Race condition Undergoing Analysis
9.8CVSS 3.1 base score
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
24 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/013dcdc1961543b9a3433466bc8c79a2f4ca75b5 Patch
https://git.kernel.org/stable/c/23079e0b7742ec114d3507c3e3aad01b7b69e4af Patch
https://git.kernel.org/stable/c/2ad56e434199ca24a812bb353667aa1c3860f513 Patch
https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d Patch
https://git.kernel.org/stable/c/6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3 Patch
https://git.kernel.org/stable/c/b35605e1f1e877038c8c9d499babbc891cdd234f Patch
https://git.kernel.org/stable/c/cc3c0399361efaaf7ae64262eb3f70829b1189c6 Patch
https://git.kernel.org/stable/c/d9b272a85fe6b8f993e37915311e4038c814a533 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-46137), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.