From: Marek Behún marek.behun@nic.cz
Explicitly check the image size against size of struct main_hdr_v1. This way the check is more readable, since the `hdrsz` variable may semantically contain another value.
Signed-off-by: Marek Behún marek.behun@nic.cz --- tools/kwboot.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/kwboot.c b/tools/kwboot.c index 4fae44c46e..77bf5cb80b 100644 --- a/tools/kwboot.c +++ b/tools/kwboot.c @@ -820,14 +820,14 @@ kwboot_img_patch_hdr(void *img, size_t *size) struct main_hdr_v1 *hdr; uint32_t srcaddr; uint8_t csum; - size_t hdrsz = sizeof(*hdr); + size_t hdrsz; int image_ver; int is_secure;
rc = -1; hdr = img;
- if (*size < hdrsz) { + if (*size < sizeof(struct main_hdr_v1)) { errno = EINVAL; goto out; }