tools: kwbimage: Verify maximal kwbimage header size

BootROM loads kwbimage header to L2-SRAM and BootROM reserve only 192 kB for it.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index 94b7685..6abb9f2 100644 (file)
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -1969,6 +1969,9 @@ static int kwbimage_verify_header(unsigned char *ptr, int image_size,
        uint32_t size;
        uint8_t csum;
 
+       if (header_size > 192*1024)
+               return -FDT_ERR_BADSTRUCTURE;
+
        if (header_size > image_size)
                return -FDT_ERR_BADSTRUCTURE;