fix bug SF#1293830: flac accepting WAVE files with "data" subchunks of size 0

diff --git a/src/flac/encode.c b/src/flac/encode.c
index 6a09d7f..47a87f3 100644 (file)
--- a/src/flac/encode.c
+++ b/src/flac/encode.c
@@ -883,6 +883,10 @@ int flac__encode_wav(FILE *infile, off_t infilesize, const char *infilename, con
                        if(!read_little_endian_uint32(infile, &xx, false, encoder_session.inbasefilename))
                                return EncoderSession_finish_error(&encoder_session);
                        data_bytes = xx;
+                       if(0 == data_bytes) {
+                               flac__utils_printf(stderr, 1, "%s: ERROR: 'data' subchunk has size of 0\n", encoder_session.inbasefilename);
+                               return EncoderSession_finish_error(&encoder_session);
+                       }
                        pad = (data_bytes & 1U) ? true : false;
 
                        bytes_per_wide_sample = channels * (bps >> 3);