diff options
| -rw-r--r-- | drivers/platform/x86/think-lmi.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c index bbfcaf23d420..4cab341a3538 100644 --- a/drivers/platform/x86/think-lmi.c +++ b/drivers/platform/x86/think-lmi.c @@ -492,14 +492,19 @@ static ssize_t display_name_show(struct kobject *kobj, struct kobj_attribute *at static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj); - char *item; + char *item, *value; int ret; ret = tlmi_setting(setting->index, &item, LENOVO_BIOS_SETTING_GUID); if (ret) return ret; - ret = sysfs_emit(buf, "%s\n", item); + /* validate and split from `item,value` -> `value` */ + value = strpbrk(item, ","); + if (!value || value == item || !strlen(value + 1)) + return -EINVAL; + + ret = sysfs_emit(buf, "%s\n", value + 1); kfree(item); return ret; } |