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Diffstat (limited to 'ext/exif/exif.c')
-rw-r--r--ext/exif/exif.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/ext/exif/exif.c b/ext/exif/exif.c
index 1147980f77..cad29b7295 100644
--- a/ext/exif/exif.c
+++ b/ext/exif/exif.c
@@ -2728,6 +2728,7 @@ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * valu
int NumDirEntries, old_motorola_intel, offset_diff;
const maker_note_type *maker_note;
char *dir_start;
+ int data_len;
for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
if (i==sizeof(maker_note_array)/sizeof(maker_note_type)) {
@@ -2782,6 +2783,7 @@ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * valu
switch (maker_note->offset_mode) {
case MN_OFFSET_MAKER:
offset_base = value_ptr;
+ data_len = value_len;
break;
case MN_OFFSET_GUESS:
if (maker_note->offset + 10 + 4 >= value_len) {
@@ -2798,6 +2800,7 @@ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * valu
return FALSE;
}
offset_base = value_ptr + offset_diff;
+ data_len = value_len - offset_diff;
break;
default:
case MN_OFFSET_NORMAL:
@@ -2811,7 +2814,7 @@ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * valu
for (de=0;de<NumDirEntries;de++) {
if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
- offset_base, IFDlength, displacement, section_index, 0, maker_note->tag_table TSRMLS_CC)) {
+ offset_base, data_len, displacement, section_index, 0, maker_note->tag_table TSRMLS_CC)) {
return FALSE;
}
}