svn commit: r1931149 - pdfbox/branches/3.0/pdfbox/src/main/java/org/apache/pdfbox/filter

[tilman]

Author: tilman
Date: Tue Jan  6 11:07:27 2026
New Revision: 1931149

Log:
PDFBOX-6141: avoid NegativeArraySizeException

Modified:
   
pdfbox/branches/3.0/pdfbox/src/main/java/org/apache/pdfbox/filter/Predictor.java

Modified: 
pdfbox/branches/3.0/pdfbox/src/main/java/org/apache/pdfbox/filter/Predictor.java
==============================================================================
--- 
pdfbox/branches/3.0/pdfbox/src/main/java/org/apache/pdfbox/filter/Predictor.java
    Tue Jan  6 11:02:20 2026        (r1931148)
+++ 
pdfbox/branches/3.0/pdfbox/src/main/java/org/apache/pdfbox/filter/Predictor.java
    Tue Jan  6 11:07:27 2026        (r1931149)
@@ -231,8 +231,9 @@ public final class Predictor
      * @param decodeParams Decode parameters for the stream
      * @return An <code>OutputStream</code> is returned, which will write 
decoded data
      * into the given stream. If no predictor is specified, the original 
stream is returned.
+     * @throws IOException
      */
-    static OutputStream wrapPredictor(OutputStream out, COSDictionary 
decodeParams)
+    static OutputStream wrapPredictor(OutputStream out, COSDictionary 
decodeParams) throws IOException
     {
         int predictor = decodeParams.getInt(COSName.PREDICTOR);
         if (predictor > 1)
@@ -276,6 +277,7 @@ public final class Predictor
         private boolean predictorRead = false;
 
         PredictorOutputStream(OutputStream out, int predictor, int colors, int 
bitsPerComponent, int columns)
+                throws IOException
         {
             super(out);
             this.predictor = predictor;
@@ -283,6 +285,10 @@ public final class Predictor
             this.bitsPerComponent = bitsPerComponent;
             this.columns = columns;
             this.rowLength = calculateRowLength(colors, bitsPerComponent, 
columns);
+            if (rowLength < 0)
+            {
+                throw new IOException("Calculated row length is negative: " + 
rowLength);
+            }
             this.predictorPerRow = predictor >= 10;
             currentRow = new byte[rowLength];
             lastRow = new byte[rowLength];