From 0a7c648e2d85a59975cc88079975cf9f3306ed0a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 24 Nov 2020 00:22:39 +0100 Subject: avformat/wavdec: Consider AV_INPUT_BUFFER_PADDING_SIZE in set_spdif() The buffer is read by using the bit reader Fixes: out of array read Fixes: 27539/clusterfuzz-testcase-minimized-ffmpeg_dem_WAV_fuzzer-5650565572591616 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/wavdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavformat/wavdec.c') diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index 256c36ebe2..ef144502a2 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -71,7 +71,7 @@ static void set_spdif(AVFormatContext *s, WAVDemuxContext *wav) int ret = ffio_ensure_seekback(s->pb, len); if (ret >= 0) { - uint8_t *buf = av_malloc(len); + uint8_t *buf = av_malloc(len + AV_INPUT_BUFFER_PADDING_SIZE); if (!buf) { ret = AVERROR(ENOMEM); } else { -- cgit v1.2.3