On Fri, 17 Sep 2021, Michael Niedermayer wrote:
Fixes: infinite loop Fixes: 37986/clusterfuzz-testcase-minimized-ffmpeg_dem_MPEGTSRAW_fuzzer-5292311517462528 -
LGTM, thanks. Marton
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/mpegts.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c index fe89d4fb9f3..bd13118f7f7 100644 --- a/libavformat/mpegts.c +++ b/libavformat/mpegts.c @@ -2865,8 +2865,8 @@ static int mpegts_resync(AVFormatContext *s, int seekback, const uint8_t *curren int64_t back = FFMIN(seekback, pos); //Special case for files like 01c56b0dc1.ts - if (current_packet[0] == 0x80 && current_packet[12] == 0x47) { - avio_seek(pb, 12 - back, SEEK_CUR); + if (current_packet[0] == 0x80 && current_packet[12] == 0x47 && pos >= TS_PACKET_SIZE) { + avio_seek(pb, 12 - TS_PACKET_SIZE, SEEK_CUR); return 0; } -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
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