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.
Affected products
linux: linux kernel
References9
- git.kernel.org/stable/c/013dcdc1961543b9a3433466bc8c79a2f4ca75b5 Patch
- git.kernel.org/stable/c/23079e0b7742ec114d3507c3e3aad01b7b69e4af Patch
- git.kernel.org/stable/c/2ad56e434199ca24a812bb353667aa1c3860f513 Patch
- git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d Patch
- git.kernel.org/stable/c/6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3 Patch
- git.kernel.org/stable/c/b35605e1f1e877038c8c9d499babbc891cdd234f Patch
- git.kernel.org/stable/c/cc3c0399361efaaf7ae64262eb3f70829b1189c6 Patch
- git.kernel.org/stable/c/d9b272a85fe6b8f993e37915311e4038c814a533 Patch
- cert-portal.siemens.com/productcert/html/ssa-784472.html
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 42 · as of 15 November 2026
- CWE
- CWE-362
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.