diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-24 17:03:08 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-31 23:09:35 +0200 |
| commit | 2611d20d353026f996cb9aaced8b35db37f490d4 (patch) | |
| tree | 43dd7353e94ed4248bd090c72b5af5b23fd72002 | |
| parent | b37ff29e0e093b15585e9fb44bbd82bdf14b5230 (diff) | |
avformat/mov: Ignore multiple STSC / STCO
Fixes: STSC / STCO inconsistency and assertion failure
Fixes: crbug1184666.mp4
Found-by: Chromium ASAN fuzzer
Reviewed-by: Matt Wolenetz <wolenetz@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mov.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c index cb818ebe0e..f4c2215ba4 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -2037,8 +2037,10 @@ static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom) if (!entries) return 0; - if (sc->chunk_offsets) - av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n"); + if (sc->chunk_offsets) { + av_log(c->fc, AV_LOG_WARNING, "Ignoring duplicated STCO atom\n"); + return 0; + } av_free(sc->chunk_offsets); sc->chunk_count = 0; sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets)); @@ -2671,8 +2673,10 @@ static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom) if (!entries) return 0; - if (sc->stsc_data) - av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n"); + if (sc->stsc_data) { + av_log(c->fc, AV_LOG_WARNING, "Ignoring duplicated STSC atom\n"); + return 0; + } av_free(sc->stsc_data); sc->stsc_count = 0; sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data)); |