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commit bffa3e9116abb7038b432443f16b1bd390e80245
Author: Marco Eichelberg <eichelberg@offis.de>
Date: Thu Jan 23 15:51:21 2025 +0100
Fixed issue with invalid RLE compressed DICOM images.
Fixed issue when processing an RLE compressed image where the RLE header
contains an invalid stripe size.
Thanks to Ding zhengzheng <xiaozheng.ding399@gmail.com> for the report
and the sample file (PoC).
--- dcmtk.orig/dcmdata/libsrc/dcrleccd.cc
+++ dcmtk/dcmdata/libsrc/dcrleccd.cc
@@ -1,6 +1,6 @@
/*
*
- * Copyright (C) 2002-2024, OFFIS e.V.
+ * Copyright (C) 2002-2025, OFFIS e.V.
* All rights reserved. See COPYRIGHT file for details.
*
* This software and supporting documentation were developed by
@@ -348,6 +348,12 @@
} /* while */
// last fragment for this RLE stripe
+ if (inputBytes + byteOffset > fragmentLength)
+ {
+ DCMDATA_ERROR("stream size in RLE header is wrong");
+ inputBytes = fragmentLength-byteOffset;
+ }
+
result = rledecoder.decompress(rleData + byteOffset, OFstatic_cast(size_t, inputBytes));
// special handling for zero pad byte at the end of the RLE stream
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