From: Michael Niedermayer <mich...@niedermayer.cc> The timeDataSize argument to aacDecoder_DecodeFrame() seems undocumented and until 2016 04 (203e3f28fbebec7011342017fafc2a0bda0ce530) unused. After that commit libfdk-aacdec interprets it as size in sample units and memsets that on error.
FFmpeg as well as others (like GStreamer) did interpret it as size in bytes. Fixes: 1442/clusterfuzz-testcase-minimized-4540199973421056 (This requires recent libfdk to reproduce) Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg --- libavcodec/libfdk-aacdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/libfdk-aacdec.c b/libavcodec/libfdk-aacdec.c index cdf7a0571f..84873a2fff 100644 --- a/libavcodec/libfdk-aacdec.c +++ b/libavcodec/libfdk-aacdec.c @@ -325,7 +325,7 @@ static int fdk_aac_decode_frame(AVCodecContext *avctx, void *data, return AVERROR_INVALIDDATA; } - err = aacDecoder_DecodeFrame(s->handle, (INT_PCM *) s->decoder_buffer, s->decoder_buffer_size, 0); + err = aacDecoder_DecodeFrame(s->handle, (INT_PCM *) s->decoder_buffer, s->decoder_buffer_size / sizeof(INT_PCM), 0); if (err == AAC_DEC_NOT_ENOUGH_BITS) { ret = avpkt->size - valid; goto end; -- 2.11.0 (Apple Git-81) _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel
