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Code Issues Releases Activity

avcodec/setts_bsf: Check timebase

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Fixes: Division by 0
Fixes: 30952/clusterfuzz-testcase-minimized-ffmpeg_BSF_SETTS_fuzzer-6601016202100736

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-03-04 13:06:22 +01:00
parent 1f74661543
commit 7fc8ba9068
1 changed files with 1 additions and 1 deletions
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libavcodec/setts_bsf.c
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@ -152,7 +152,7 @@ static int setts_filter(AVBSFContext *ctx, AVPacket *pkt)
s->var_values[VAR_PREV_OUTDTS] = s->prev_outdts;
s->var_values[VAR_STARTPTS] = s->start_pts;
s->var_values[VAR_STARTDTS] = s->start_dts;
s->var_values[VAR_TB] = av_q2d(ctx->time_base_out);
s->var_values[VAR_TB] = ctx->time_base_out.den ? av_q2d(ctx->time_base_out) : 0;
s->var_values[VAR_SR] = ctx->par_in->sample_rate;
new_ts = llrint(av_expr_eval(s->ts_expr, s->var_values, NULL));