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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-18 23:28:33 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-04-29 23:31:02 +0200 |
| commit | 55e344ee5aa6f6e04e50bbac457e0ca53433ab75 (patch) | |
| tree | 8891ffefb717f2614a60c2dac5fad49334533a9b | |
| parent | 59a9204b8a11a1428367d6e1ddc0ef123cfddb61 (diff) | |
| download | ffmpeg-55e344ee5aa6f6e04e50bbac457e0ca53433ab75.tar.gz | |
avcodec/svq1dec: Check that there is data left after the header
Fixes: Timeout (21sec -> 255ms)
Fixes: 20709/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SVQ1_fuzzer-5085075089915904
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/svq1dec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/svq1dec.c b/libavcodec/svq1dec.c index b09abc20bf..25bd3d0253 100644 --- a/libavcodec/svq1dec.c +++ b/libavcodec/svq1dec.c @@ -602,6 +602,8 @@ static int svq1_decode_frame_header(AVCodecContext *avctx, AVFrame *frame) if (skip_1stop_8data_bits(bitbuf) < 0) return AVERROR_INVALIDDATA; } + if (get_bits_left(bitbuf) <= 0) + return AVERROR_INVALIDDATA; s->width = width; s->height = height; |