diff options
| author | Pali Rohár <[email protected]> | 2021-08-11 10:14:15 +0200 |
|---|---|---|
| committer | Stefan Roese <[email protected]> | 2021-09-01 08:07:04 +0200 |
| commit | 33a0af2d8041b027cfbf6ab23c93026339aff142 (patch) | |
| tree | 5761ca833bd6a59eb530a70c17ce3c5b6e813989 /tools | |
| parent | b984056fa696e795625a2f5292859b73176f7713 (diff) | |
tools: kwbimage: Verify size of v0 image header
Check that extended image header size is not larger than file size.
Signed-off-by: Pali Rohár <[email protected]>
Reviewed-by: Stefan Roese <[email protected]>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/kwbimage.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/kwbimage.c b/tools/kwbimage.c index 542779ed484..4709c6d5442 100644 --- a/tools/kwbimage.c +++ b/tools/kwbimage.c @@ -1670,6 +1670,9 @@ static int kwbimage_verify_header(unsigned char *ptr, int image_size, if (mhdr->ext & 0x1) { struct ext_hdr_v0 *ext_hdr; + if (header_size + sizeof(*ext_hdr) > image_size) + return -FDT_ERR_BADSTRUCTURE; + ext_hdr = (struct ext_hdr_v0 *) (ptr + sizeof(struct main_hdr_v0)); checksum = image_checksum8(ext_hdr, |