6.6-stable review patch. If anyone has any objections, please let me know.
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From: Tzung-Bi Shih tzungbi@kernel.org
commit 944edca81e7aea15f83cf9a13a6ab67f711e8abd upstream.
After unbinding the driver, another kthread `cros_ec_console_log_work` is still accessing the device, resulting an UAF and crash.
The driver doesn't unregister the EC device in .remove() which should shutdown sub-devices synchronously. Fix it.
Fixes: 26a14267aff2 ("platform/chrome: Add ChromeOS EC ISHTP driver") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20251031033900.3577394-1-tzungbi@kernel.org Signed-off-by: Tzung-Bi Shih tzungbi@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/platform/chrome/cros_ec_ishtp.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/platform/chrome/cros_ec_ishtp.c +++ b/drivers/platform/chrome/cros_ec_ishtp.c @@ -715,6 +715,7 @@ static void cros_ec_ishtp_remove(struct
cancel_work_sync(&client_data->work_ishtp_reset); cancel_work_sync(&client_data->work_ec_evt); + cros_ec_unregister(client_data->ec_dev); cros_ish_deinit(cros_ish_cl); ishtp_put_device(cl_device); }