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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-23 03:40:02 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-04-13 00:35:15 +0200 |
| commit | bcc6d409283aebc114d674ace998016d04523ce3 (patch) | |
| tree | 662921f5975c39b947a73a4ca7fc8788db5e46cd | |
| parent | f3562ee6fc847db3162fccfa98449ce21404608e (diff) | |
| download | ffmpeg-bcc6d409283aebc114d674ace998016d04523ce3.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 79f9a757a0..3cb4834737 100644 --- a/libavcodec/smc.c +++ b/libavcodec/smc.c @@ -438,6 +438,10 @@ static int smc_decode_frame(AVCodecContext *avctx, int pal_size; const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, &pal_size); 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); |