This is a note to let you know that I've just added the patch titled thunderbolt: Fix off by one in tb_port_find_retimer() 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: thunderbolt-fix-off-by-one-in-tb_port_find_retimer.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. >From 08fe7ae1857080f5075df5ac7fef2ecd4e289117 Mon Sep 17 00:00:00 2001 From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Date: Mon, 29 Mar 2021 09:08:01 +0300 Subject: thunderbolt: Fix off by one in tb_port_find_retimer() From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> commit 08fe7ae1857080f5075df5ac7fef2ecd4e289117 upstream. This array uses 1-based indexing so it corrupts memory one element beyond of the array. Fix it by making the array one element larger. Fixes: dacb12877d92 ("thunderbolt: Add support for on-board retimers") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/thunderbolt/retimer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/thunderbolt/retimer.c +++ b/drivers/thunderbolt/retimer.c @@ -406,7 +406,7 @@ static struct tb_retimer *tb_port_find_r */ int tb_retimer_scan(struct tb_port *port) { - u32 status[TB_MAX_RETIMER_INDEX] = {}; + u32 status[TB_MAX_RETIMER_INDEX + 1] = {}; int ret, i, last_idx = 0; if (!port->cap_usb4) Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are queue-5.10/thunderbolt-fix-off-by-one-in-tb_port_find_retimer.patch queue-5.10/thunderbolt-fix-a-leak-in-tb_retimer_add.patch