diff options
Diffstat (limited to 'ext/exif/exif.c')
| -rw-r--r-- | ext/exif/exif.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/exif/exif.c b/ext/exif/exif.c index d78f214e91..c82ce050fa 100644 --- a/ext/exif/exif.c +++ b/ext/exif/exif.c @@ -3304,7 +3304,7 @@ static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, cha offset_base is ImageInfo->file.list[sn].data-dir_offset dir_entry - offset_base is dir_offset+2+i*12 */ - if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base)) { + if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base) || dir_entry <= offset_base) { /* It is important to check for IMAGE_FILETYPE_TIFF * JPEG does not use absolute pointers instead its pointers are * relative to the start of the TIFF header in APP1 section. */ |