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-rw-r--r--drivers/usb/serial/io_ti.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index 07c0eff3bef4..cc28f5869a3e 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -1464,6 +1464,12 @@ static int do_boot_mode(struct edgeport_serial *serial,
/* Allocate a 15.5k buffer + 3 byte header */
buffer_size = (((1024 * 16) - 512) +
sizeof(struct ti_i2c_image_header));
+ if (fw->size - 4 > buffer_size) {
+ dev_err(dev, "%s - firmware image is too large\n",
+ __func__);
+ return -EINVAL;
+ }
+
buffer = kmalloc(buffer_size, GFP_KERNEL);
if (!buffer)
return -ENOMEM;