CVE-2026-98235

In the Linux kernel, the following vulnerability has been resolved:

net/sched: act api: release tail references on DELACTION failure

A batched RTM DELACTION request takes a temporary reference on each action before attempting any deletion. tcf action delete() clears each processed slot and drops its temporary reference before attempting the deletion. If deletion fails, tca action gd() calls tcf action put many() to release the remaining references, but its tcf act for each action() iterator stops at the first NULL slot.

When a batch stops at an action bound to a filter, this leaks a reference on each subsequent action. A later delete of an unbound action can then return success without removing it from the IDR.

Walk the full array in tcf action put many() and skip NULL slots to release the references held on the unprocessed actions.