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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-23 09:18:12 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-02 19:55:09 +0200 |
| commit | 71c228d2b8c93857a104c034937b1350d1959b3f (patch) | |
| tree | 6f72a96a1387d17912cfdacdf495d6b7b233d164 | |
| parent | 3191aecdfa7ec0218c578c031ae9555bb2f98c2b (diff) | |
| download | ffmpeg-71c228d2b8c93857a104c034937b1350d1959b3f.tar.gz | |
avcodec/wmavoice: Check remaining input in parse_packet_header()
Fixes: Infinite loop
Fixes: 18914/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMAVOICE_fuzzer-5731902946541568
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 19c41969b26d07519fff8182a0d3266cdb712078)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wmavoice.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/wmavoice.c b/libavcodec/wmavoice.c index abea3a6751..4c764a8f01 100644 --- a/libavcodec/wmavoice.c +++ b/libavcodec/wmavoice.c @@ -1835,6 +1835,9 @@ static int parse_packet_header(WMAVoiceContext *s) skip_bits(gb, 4); // packet sequence number s->has_residual_lsps = get_bits1(gb); do { + if (get_bits_left(gb) < 6 + s->spillover_bitsize) + return AVERROR_INVALIDDATA; + res = get_bits(gb, 6); // number of superframes per packet // (minus first one if there is spillover) n_superframes += res; |