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From 881a070194783561fd209b7c789a4e75566f7f37 Mon Sep 17 00:00:00 2001
From: zhailiangliang <zhailiangliang@loongson.cn>
Date: Tue, 7 Mar 2023 15:02:08 +0800
Subject: [PATCH] Fix memory leak in tiffcrop.c
Upstream-Status: Backport [https://gitlab.com/libtiff/libtiff/-/commit/881a070194783561fd209b7c789a4e75566f7f37]
CVE: CVE-2023-3576
Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
---
tools/tiffcrop.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/tools/tiffcrop.c b/tools/tiffcrop.c
index f14bb0c..7121c7c 100644
--- a/tools/tiffcrop.c
+++ b/tools/tiffcrop.c
@@ -7746,8 +7746,13 @@ createCroppedImage(struct image_data *image, struct crop_mask *crop,
read_buff = *read_buff_ptr;
+ /* Memory is freed before crop_buff_ptr is overwritten */
+ if (*crop_buff_ptr != NULL)
+ {
+ _TIFFfree(*crop_buff_ptr);
+ }
+
/* process full image, no crop buffer needed */
- crop_buff = read_buff;
*crop_buff_ptr = read_buff;
crop->combined_width = image->width;
crop->combined_length = image->length;
--
2.25.1
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