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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-09-22 22:47:03 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-09-24 15:37:19 +0200 |
| commit | 8367d7e184562f8b9f410c0f325596f7e041884f (patch) | |
| tree | 43f5eddfd058caf4a33cbda9bad79d817a3c7525 | |
| parent | 050b5e85cbe61414ba9b78f76a04b2488e816f42 (diff) | |
| download | ffmpeg-8367d7e184562f8b9f410c0f325596f7e041884f.tar.gz | |
avcodec/imm4: Check input size
Fixes: Timeout
Fixes: 71324/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IMM4_fuzzer-5388489435185152
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/imm4.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/imm4.c b/libavcodec/imm4.c index a6da8fcf95..573b614833 100644 --- a/libavcodec/imm4.c +++ b/libavcodec/imm4.c @@ -453,6 +453,10 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame, if (ret < 0) return ret; + if (((avctx->width + 15) / 16) * ((avctx->height + 15) / 16) > get_bits_left(gb)) + return AVERROR_INVALIDDATA; + + if ((ret = ff_get_buffer(avctx, frame, (frame->flags & AV_FRAME_FLAG_KEY) ? AV_GET_BUFFER_FLAG_REF : 0)) < 0) return ret; |