CVE-2026-46137

published 2026-05-28

CVE-2026-46137: 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…

critical 9.8 CVSS 3.1

AV N AC L PR N UI N S U C H I H A H

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.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
linux	linux	—	—
linux	linux	>= 00cfd77b9063dcdf3628a7087faba60de85a9cc8 < 013dcdc1961543b9a3433466bc8c79a2f4ca75b5	013dcdc1961543b9a3433466bc8c79a2f4ca75b5
linux	linux	>= 00cfd77b9063dcdf3628a7087faba60de85a9cc8 < 6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3	6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3
linux	linux	>= 00cfd77b9063dcdf3628a7087faba60de85a9cc8 < 2ad56e434199ca24a812bb353667aa1c3860f513	2ad56e434199ca24a812bb353667aa1c3860f513
linux	linux	>= 00cfd77b9063dcdf3628a7087faba60de85a9cc8 < cc3c0399361efaaf7ae64262eb3f70829b1189c6	cc3c0399361efaaf7ae64262eb3f70829b1189c6
linux	linux	>= 00cfd77b9063dcdf3628a7087faba60de85a9cc8 < 5cd6e0ad79d2615264f63929f8b457ad97ae550d	5cd6e0ad79d2615264f63929f8b457ad97ae550d
linux	linux_kernel	—	—

CWE-821