Siemens RUGGEDCOM RST2428P (6GK6242-6PA00) — kwetsbaarheid CVE-2025-40248

In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect() if already established During connect(), acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connect() invoking vsock_transport_cancel_pkt() -> virtio_transport_purge_skbs() may race with sendmsg() invoking virtio_transport_get_credit(). This results in a permanently elevated `vvs->bytes_unsent`. Which, in turn, confuses the SOCK_LINGER handling. 2. connect() resetting a connected socket's state may race with socket being placed in a sockmap. A disconnected socket remaining in a sockmap breaks sockmap's assumptions. And gives rise to WARNs. 3. connect() transitioning SS_CONNECTED -> SS_UNCONNECTED allows for a transport change/drop after TCP_ESTABLISHED. Which poses a problem for any simultaneous sendmsg() or connect() and may result in a use-after-free/null-ptr-deref. Do not disconnect socket on signal/timeout. Keep the logic for unconnected sockets: they don't linger, can't be placed in a sockmap, are rejected by sendmsg().

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

• •Netwerktoegang tot het getroffen apparaat of segment is vereist.
• •Er zijn geen geldige inloggegevens nodig.
• •Geen gebruikersinteractie vereist.

• •Pas de laatste firmware- of software-update toe en valideer de integriteit ervan.
• •Beperk netwerktoegang tot het getroffen apparaat tot een dedicated OT-beheersegment.
• •Implementeer netwerksegmentatie conform zones en conduits (IEC 62443-3-2).
• •Monitor op afwijkend protocolverkeer via een OT-aware detectiesysteem.