CVE-2026-23437

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: shaper: protect late read accesses to the hierarchy<br /> <br /> We look up a netdev during prep of Netlink ops (pre- callbacks)<br /> and take a ref to it. Then later in the body of the callback<br /> we take its lock or RCU which are the actual protections.<br /> <br /> This is not proper, a conversion from a ref to a locked netdev<br /> must include a liveness check (a check if the netdev hasn&amp;#39;t been<br /> unregistered already). Fix the read cases (those under RCU).<br /> Writes needs a separate change to protect from creating the<br /> hierarchy after flush has already run.