This is a note to let you know that I've just added the patch titled net/mlx5e: Fix use-after-free when reverting termination table to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-mlx5e-fix-use-after-free-when-reverting-terminat.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 5e810c7a3703ea7f7e4e2b669a31bfec8ead0d80 Author: Roi Dayan <roid@xxxxxxxxxx> Date: Mon Nov 14 20:04:29 2022 +0200 net/mlx5e: Fix use-after-free when reverting termination table [ Upstream commit 52c795af04441d76f565c4634f893e5b553df2ae ] When having multiple dests with termination tables and second one or afterwards fails the driver reverts usage of term tables but doesn't reset the assignment in attr->dests[num_vport_dests].termtbl which case a use-after-free when releasing the rule. Fix by resetting the assignment of termtbl to null. Fixes: 10caabdaad5a ("net/mlx5e: Use termination table for VLAN push actions") Signed-off-by: Roi Dayan <roid@xxxxxxxxxx> Reviewed-by: Maor Dickman <maord@xxxxxxxxxx> Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c index 6c865cb7f445..132ea9997676 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c @@ -308,6 +308,8 @@ mlx5_eswitch_add_termtbl_rule(struct mlx5_eswitch *esw, for (curr_dest = 0; curr_dest < num_vport_dests; curr_dest++) { struct mlx5_termtbl_handle *tt = attr->dests[curr_dest].termtbl; + attr->dests[curr_dest].termtbl = NULL; + /* search for the destination associated with the * current term table */