diff options
Diffstat (limited to 'drivers/usb/atm/cxacru.c')
| -rw-r--r-- | drivers/usb/atm/cxacru.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c index 813d4d3a51c6..1173f9cbc137 100644 --- a/drivers/usb/atm/cxacru.c +++ b/drivers/usb/atm/cxacru.c @@ -270,6 +270,7 @@ static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf) static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) { static char *str[] = { "no", "yes" }; + if (unlikely(value >= ARRAY_SIZE(str))) return snprintf(buf, PAGE_SIZE, "%u\n", value); return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); @@ -278,6 +279,7 @@ static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf) { static char *str[] = { NULL, "not connected", "connected", "lost" }; + if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL)) return snprintf(buf, PAGE_SIZE, "%u\n", value); return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); @@ -702,6 +704,7 @@ static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_requ len = ret / 4; for (offb = 0; offb < len; ) { int l = le32_to_cpu(buf[offb++]); + if (l < 0 || l > stride || l > (len - offb) / 2) { if (printk_ratelimit()) usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", @@ -732,6 +735,7 @@ cleanup: static int cxacru_card_status(struct cxacru_data *instance) { int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); + if (ret < 0) { /* firmware not loaded */ usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret); return ret; @@ -945,6 +949,7 @@ static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw, offb = offd = 0; do { int l = min_t(int, stride, size - offd); + buf[offb++] = fw; buf[offb++] = l; buf[offb++] = code1; @@ -1091,8 +1096,8 @@ static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, { const struct firmware *fw, *bp; struct cxacru_data *instance = usbatm_instance->driver_data; - int ret = cxacru_find_firmware(instance, "fw", &fw); + if (ret) { usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n"); return ret; |