[FFmpeg-devel] [PATCH 1/4] avcodec/flac_parser: do not over-decrement nb_headers_buffered

Michael Niedermayer michael at niedermayer.cc
Thu Sep 19 22:37:38 EEST 2019


Fixes: Timeout
Fixes: 15400/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLAC_fuzzer-5669509794365440

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavcodec/flac_parser.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/libavcodec/flac_parser.c b/libavcodec/flac_parser.c
index 2721286464..f085159d1d 100644
--- a/libavcodec/flac_parser.c
+++ b/libavcodec/flac_parser.c
@@ -570,7 +570,6 @@ static int flac_parse(AVCodecParserContext *s, AVCodecContext *avctx,
         for (curr = best_child->next; curr; curr = curr->next)
             curr->offset -= best_child->offset;
 
-        fpc->nb_headers_buffered--;
         best_child->offset = 0;
         fpc->headers       = best_child;
         if (fpc->nb_headers_buffered >= FLAC_MIN_HEADERS) {
-- 
2.23.0



More information about the ffmpeg-devel mailing list