CVE-2026-64092

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> batman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown<br /> <br /> The receiver shutdown timer handler, batadv_tp_receiver_shutdown(), is<br /> responsible for releasing the tp_vars reference it holds. However, the<br /> existing logic for coordinating this release with batadv_tp_stop_all() was<br /> flawed.<br /> <br /> timer_shutdown_sync() guarantees the timer will not fire again after it<br /> returns, but it returns non-zero only when the timer was pending at the<br /> time of the call. If the timer had already expired (and<br /> batadv_tp_stop_all() would unsucessfully try to rearm itself),<br /> batadv_tp_stop_all() skips its batadv_tp_vars_put(), and<br /> batadv_tp_receiver_shutdown() fails to put its own reference as well.<br /> <br /> Fix this by introducing a new atomic variable receiving that is set to 1<br /> when the receiver is initialized and cleared atomically with atomic_xchg()<br /> by whichever side claims it first. Only the side that observes the<br /> transition from 1 to 0 is responsible for releasing the tp_vars timer<br /> reference, eliminating the uncertainty.