Fixes: Infinite loop Fixes: 26576/clusterfuzz-testcase-minimized-ffmpeg_dem_GXF_fuzzer-4823080360476672
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/gxf.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/libavformat/gxf.c b/libavformat/gxf.c index 49364b7205..bbad47c240 100644 --- a/libavformat/gxf.c +++ b/libavformat/gxf.c @@ -285,9 +285,12 @@ static void gxf_track_tags(AVIOContext *pb, int *len, struct gxf_stream_info *si static void gxf_read_index(AVFormatContext *s, int pkt_len) { AVIOContext *pb = s->pb; AVStream *st; - uint32_t fields_per_map = avio_rl32(pb); - uint32_t map_cnt = avio_rl32(pb); + uint32_t fields_per_map, map_cnt; int i; + if (pkt_len < 8) + return; + fields_per_map = avio_rl32(pb); + map_cnt = avio_rl32(pb); pkt_len -= 8; if ((s->flags & AVFMT_FLAG_IGNIDX) || !s->streams) { avio_skip(pb, pkt_len); -- 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".
