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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-02 02:26:44 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-16 20:02:12 +0300 |
| commit | 3bf80c7b223ed06b32e215fd743fbe2eb5d61459 (patch) | |
| tree | f2863824e2a893a51686f3f71cf5518ccb08ddc8 | |
| parent | 1361e4abb81f28ac73cc41ae6bf94c045bbb7eee (diff) | |
avcodec/indeo4: Check for end of bitstream in decode_mb_info()
Fixes: Timeout
Fixes: 8776/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_INDEO4_fuzzer-5361788798369792
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 267ba2aa96354c5b6a1ea89b2943fbd7a4893862)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/indeo4.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/indeo4.c b/libavcodec/indeo4.c index 7dff9db877..15ad6f8afc 100644 --- a/libavcodec/indeo4.c +++ b/libavcodec/indeo4.c @@ -492,6 +492,11 @@ static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band, mb->b_mv_x = mb->b_mv_y = 0; + if (get_bits_left(&ctx->gb) < 1) { + av_log(avctx, AV_LOG_ERROR, "Insufficient input for mb info\n"); + return AVERROR_INVALIDDATA; + } + if (get_bits1(&ctx->gb)) { if (ctx->frame_type == IVI4_FRAMETYPE_INTRA) { av_log(avctx, AV_LOG_ERROR, "Empty macroblock in an INTRA picture!\n"); |