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thunderbolt: Fix off by one in tb_port_find_retimer()

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commit 08fe7ae185 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: dacb12877d ("thunderbolt: Add support for on-board retimers")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2021-03-29 09:08:01 +03:00 committed by Greg Kroah-Hartman
parent 256ece9549
commit 126ce97d39
1 changed files with 1 additions and 1 deletions
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2
drivers/thunderbolt/retimer.c
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@ -406,7 +406,7 @@ static struct tb_retimer *tb_port_find_retimer(struct tb_port *port, u8 index)
*/
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)