In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: release mesh path quota on failed additions Repeated failed or duplicate mesh path additions can exhaust MESH_MAX_MPATHS while the path table holds fewer paths, which stops new paths to reachable destinations from being created. mesh_path_add() reserves a slot before allocating and inserting a path. If allocation fails, the function returns without releasing the slot. If the rhashtable insertion reports an error or an existing destination, the function discards its candidate but retains the reservation. No new path is installed in any of these cases. Release the reservation whenever the candidate is not installed.
https://git.kernel.org/stable/c/a613c891906b558c10a4fa98ca29747b98e857cb
https://git.kernel.org/stable/c/a59eca4557c7462aad1b160011013290a92de97d
https://git.kernel.org/stable/c/7325a44474f20c1393a1c114c6811abce6ddfaf4
https://git.kernel.org/stable/c/56691ed9ef792f180e008a43294a4dc059fbeca2