[PATCH 6.6 101/567] platform/x86: dell-wmi-sysman: Dont hex dump plaintext password data

Greg Kroah-Hartman
2026-03-23T14:58:40Z

6.6-stable review patch. If anyone has any objections, please let me know.

------------------

From: Thorsten Blum <thorsten.blum@linux.dev>

commit d1a196e0a6dcddd03748468a0e9e3100790fc85c upstream.

set_new_password() hex dumps the entire buffer, which contains plaintext
password data, including current and new passwords. Remove the hex dump
to avoid leaking credentials.

Fixes: e8a60aa7404b ("platform/x86: Introduce support for Systems Management Driver over WMI for Dell Systems")
Cc: stable@vger.kernel.org
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20260303113050.58127-2-thorsten.blum@linux.dev
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/platform/x86/dell/dell-wmi-sysman/passwordattr-interface.c | 1 -
1 file changed, 1 deletion(-)

--- a/drivers/platform/x86/dell/dell-wmi-sysman/passwordattr-interface.c
+++ b/drivers/platform/x86/dell/dell-wmi-sysman/passwordattr-interface.c
@@ -93,7 +93,6 @@ int set_new_password(const char *passwor
if (ret < 0)
goto out;

- print_hex_dump_bytes("set new password data: ", DUMP_PREFIX_NONE, buffer, buffer_size);
ret = call_password_interface(wmi_priv.password_attr_wdev, buffer, buffer_size);
/* on success copy the new password to current password */
if (!ret)