[PATCH] staging: rtl8723bs: use kfree_sensitive() for key material
From: Ivy Lopez
Date: Fri Jul 17 2026 - 18:03:53 EST
The set_stakey_parm struct contains a 16-byte encryption key.
Use kfree_sensitive() instead of kfree() to ensure the key
material is zeroed before the memory is freed, preventing
potential information leaks.
Fixes: 554c0a3abf21 ("staging: Add rtl8723bs sdio wifi driver")
Signed-off-by: Ivy Lopez <skunkolee@xxxxxxxxx>
---
Changes in v4:
- Add Fixes: tag
- Previous versions had unrelated ftmac100 changes (now removed)
drivers/staging/rtl8723bs/core/rtw_cmd.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/rtl8723bs/core/rtw_cmd.c b/drivers/staging/rtl8723bs/core/rtw_cmd.c
index b932670f5d63..a34ee407285b 100644
--- a/drivers/staging/rtl8723bs/core/rtw_cmd.c
+++ b/drivers/staging/rtl8723bs/core/rtw_cmd.c
@@ -899,7 +899,7 @@ u8 rtw_setstakey_cmd(struct adapter *padapter, struct sta_info *sta, u8 unicast_
if (enqueue) {
ph2c = kzalloc_obj(*ph2c);
if (!ph2c) {
- kfree(psetstakey_para);
+ kfree_sensitive(psetstakey_para);
res = _FAIL;
goto exit;
}
@@ -907,7 +907,7 @@ u8 rtw_setstakey_cmd(struct adapter *padapter, struct sta_info *sta, u8 unicast_
psetstakey_rsp = kzalloc_obj(*psetstakey_rsp);
if (!psetstakey_rsp) {
kfree(ph2c);
- kfree(psetstakey_para);
+ kfree_sensitive(psetstakey_para);
res = _FAIL;
goto exit;
}
@@ -918,7 +918,7 @@ u8 rtw_setstakey_cmd(struct adapter *padapter, struct sta_info *sta, u8 unicast_
res = rtw_enqueue_cmd(pcmdpriv, ph2c);
} else {
set_stakey_hdl(padapter, (u8 *)psetstakey_para);
- kfree(psetstakey_para);
+ kfree_sensitive(psetstakey_para);
}
exit:
return res;
@@ -958,7 +958,7 @@ u8 rtw_clearstakey_cmd(struct adapter *padapter, struct sta_info *sta, u8 enqueu
psetstakey_rsp = kzalloc_obj(*psetstakey_rsp);
if (!psetstakey_rsp) {
kfree(ph2c);
- kfree(psetstakey_para);
+ kfree_sensitive(psetstakey_para);
res = _FAIL;
goto exit;
}
--
2.55.0