Fix processing of SunRaster images with negative maplength

10 years ago · 851f20e40c
parent 8298644b85
commit 851f20e40c
1 changed files with 1 additions and 1 deletions
--- a/modules/imgcodecs/src/grfmt_sunras.cpp
+++ b/modules/imgcodecs/src/grfmt_sunras.cpp
@ -96,7 +96,7 @@ bool  SunRasterDecoder::readHeader()
            (m_encoding == RAS_OLD || m_encoding == RAS_STANDARD ||
             (m_type == RAS_BYTE_ENCODED && m_bpp == 8) || m_type == RAS_FORMAT_RGB) &&
            ((m_maptype == RMT_NONE && m_maplength == 0) ||
-             (m_maptype == RMT_EQUAL_RGB && m_maplength <= palSize && m_bpp <= 8)))
+             (m_maptype == RMT_EQUAL_RGB && m_maplength <= palSize && m_maplength > 0 && m_bpp <= 8)))
        {
            memset( m_palette, 0, sizeof(m_palette));