imgcodecs(tiff): avoid leak of helper struct on malformed inputs

oss-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13285
6 years ago · 45428b897f
parent 360758e8ae
commit 45428b897f
1 changed files with 2 additions and 0 deletions
--- a/modules/imgcodecs/src/grfmt_tiff.cpp
+++ b/modules/imgcodecs/src/grfmt_tiff.cpp
@ -214,6 +214,8 @@ bool TiffDecoder::readHeader()
                                  &TiffDecoderBufHelper::write, &TiffDecoderBufHelper::seek,
                                  &TiffDecoderBufHelper::close, &TiffDecoderBufHelper::size,
                                  &TiffDecoderBufHelper::map, /*unmap=*/0 );
+            if (!tif)
+                delete buf_helper;
        }
        else
        {