Fixes: Timeout Fixes: 8646/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFV1_fuzzer-5649968353247232
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/ffv1dec.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index 7658a51685..261e0cf70c 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -546,8 +546,14 @@ static int read_header(FFV1Context *f) f->ac = get_symbol(c, state, 0); if (f->ac == AC_RANGE_CUSTOM_TAB) { - for (i = 1; i < 256; i++) - f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i]; + for (i = 1; i < 256; i++) { + int st = get_symbol(c, state, 1) + c->one_state[i]; + if (st < 1 || st > 255) { + av_log(f->avctx, AV_LOG_ERROR, "invalid state transition %d\n", st); + return AVERROR_INVALIDDATA; + } + f->state_transition[i] = st; + } } colorspace = get_symbol(c, state, 0); //YUV cs type -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
