File php-CVE-2019-9638,9639.patch of Package php7.24160

Index: php-7.0.7/ext/exif/exif.c
===================================================================
--- php-7.0.7.orig/ext/exif/exif.c	2019-03-19 14:13:08.617899764 +0100
+++ php-7.0.7/ext/exif/exif.c	2019-03-19 14:15:02.922567478 +0100
@@ -2729,7 +2729,7 @@ static int exif_process_IFD_in_MAKERNOTE
 		break;
 	}
 
-	if (maker_note->offset >= value_len) {
+	if (value_len < 2 || maker_note->offset >= value_len - 1) {
 		/* Do not go past the value end */
 		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X offset 0x%04X", value_len, maker_note->offset);
 		return FALSE;
@@ -2782,6 +2782,7 @@ static int exif_process_IFD_in_MAKERNOTE
 			break;
 		default:
 		case MN_OFFSET_NORMAL:
+			data_len = value_len;
 			break;
 	}