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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-23 03:40:02 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-27 19:59:58 +0100 |
| commit | 789a12b140ba2426a1c9bb9ce31a7a4f50d0216a (patch) | |
| tree | f4fdf119b194c8b8e5d570f354e31a16e348c915 | |
| parent | 24a3c45da511c58f550f33db507c3fda50e496af (diff) | |
| download | ffmpeg-789a12b140ba2426a1c9bb9ce31a7a4f50d0216a.tar.gz | |
avcodec/smc: Check input packet size
Fixes: Timeout
Fixes: 6261/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SMC_fuzzer-5811309653262336
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 0293663483ab5dbfff23602a62800d84e021b33c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/smc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/smc.c b/libavcodec/smc.c index 18174fa57e..66de691e2c 100644 --- a/libavcodec/smc.c +++ b/libavcodec/smc.c @@ -437,6 +437,10 @@ static int smc_decode_frame(AVCodecContext *avctx, SmcContext *s = avctx->priv_data; const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL); int ret; + int total_blocks = ((s->avctx->width + 3) / 4) * ((s->avctx->height + 3) / 4); + + if (total_blocks / 1024 > avpkt->size) + return AVERROR_INVALIDDATA; bytestream2_init(&s->gb, buf, buf_size); |