From: Wang Ming machel@vivo.com
[ Upstream commit 1da0893aed2e48e2bdf37c29b029f2e060d25927 ]
key might contain private part of the key, so better use kfree_sensitive to free it.
Signed-off-by: Wang Ming machel@vivo.com Link: https://lore.kernel.org/r/20230717101114.18966-1-machel@vivo.com Reviewed-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/think-lmi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index 3cbb92b6c5215..f6290221d139d 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -719,12 +719,12 @@ static ssize_t cert_to_password_store(struct kobject *kobj, /* Format: 'Password,Signature' */ auth_str = kasprintf(GFP_KERNEL, "%s,%s", passwd, setting->signature); if (!auth_str) { - kfree(passwd); + kfree_sensitive(passwd); return -ENOMEM; } ret = tlmi_simple_call(LENOVO_CERT_TO_PASSWORD_GUID, auth_str); kfree(auth_str); - kfree(passwd); + kfree_sensitive(passwd);
return ret ?: count; }