1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
From eecb0712f4c3a5b449f70c57988260a667ddbdef Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Sun, 6 Feb 2022 13:08:38 +0100
Subject: [PATCH] TIFFFetchStripThing(): avoid calling memcpy() with a null
source pointer and size of zero (fixes #362)
---
libtiff/tif_dirread.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Index: tiff-4.2.0/libtiff/tif_dirread.c
===================================================================
--- tiff-4.2.0.orig/libtiff/tif_dirread.c 2022-02-22 23:56:43.727328819 +0100
+++ tiff-4.2.0/libtiff/tif_dirread.c 2022-02-22 23:56:43.727328819 +0100
@@ -5765,8 +5765,9 @@
_TIFFfree(data);
return(0);
}
- _TIFFmemcpy(resizeddata,data,(uint32)dir->tdir_count*sizeof(uint64));
- _TIFFmemset(resizeddata+(uint32)dir->tdir_count,0,(nstrips-(uint32)dir->tdir_count)*sizeof(uint64));
+ if( dir->tdir_count )
+ _TIFFmemcpy(resizeddata,data, (uint32)dir->tdir_count * sizeof(uint64));
+ _TIFFmemset(resizeddata+(uint32)dir->tdir_count, 0, (nstrips - (uint32)dir->tdir_count) * sizeof(uint64));
_TIFFfree(data);
data=resizeddata;
}
|
