From: Michael R Sweet <msweet@msweet.org>
Date: Sat, 1 Aug 2026 14:28:39 +0000 (-0400)
Subject: Fix regression in memory allocations for non-PackBits compression buffers.
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0f2c0cebbfeaef808a077a9ccccda9e1abb77dc9;p=thirdparty%2Fcups.git

Fix regression in memory allocations for non-PackBits compression buffers.
---

diff --git a/filter/rastertoepson.c b/filter/rastertoepson.c
index afdfc70d1d..f8005ffed8 100644
--- a/filter/rastertoepson.c
+++ b/filter/rastertoepson.c
@@ -297,7 +297,15 @@ StartPage(
   for (plane = 1; plane < NumPlanes; plane ++)
     Planes[plane] = Planes[0] + plane * header->cupsBytesPerLine / NumPlanes;
 
-  if (header->cupsCompression || DotBytes)
+  if (DotBytes)
+  {
+    if ((CompBuffer = calloc(2, header->cupsWidth + 1)) == NULL)
+    {
+      fputs("ERROR: Unable to allocate memory\n", stderr);
+      exit(1);
+    }
+  }
+  else if (header->cupsCompression)
   {
     if ((CompBuffer = packbits_alloc(header->cupsBytesPerLine)) == NULL)
     {
diff --git a/filter/rastertohp.c b/filter/rastertohp.c
index 3d0eb6c705..359256e84b 100644
--- a/filter/rastertohp.c
+++ b/filter/rastertohp.c
@@ -255,8 +255,10 @@ StartPage(ppd_file_t         *ppd,	/* I - PPD file */
   for (plane = 1; plane < NumPlanes; plane ++)
     Planes[plane] = Planes[0] + plane * header->cupsBytesPerLine / NumPlanes;
 
-  if (header->cupsCompression)
+  if (header->cupsCompression == 2)
     CompBuffer = packbits_alloc(header->cupsBytesPerLine);
+  else if (header->cupsCompression)
+    CompBuffer = malloc(header->cupsBytesPerLine * 2 + 2);
   else
     CompBuffer = NULL;
 }