From 7d1dec466895eed12f2c79b7ab5447f5390fe869 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 1 Nov 2017 14:00:19 +0100 Subject: [PATCH] avcodec/aacsbr_fixed: Fix division by zero in sbr_gain_calc() Fixes: 3642/clusterfuzz-testcase-minimized-5443853801750528 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/aacsbr_fixed.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/aacsbr_fixed.c b/libavcodec/aacsbr_fixed.c index 289bb86a81..3d5875a469 100644 --- a/libavcodec/aacsbr_fixed.c +++ b/libavcodec/aacsbr_fixed.c @@ -433,6 +433,7 @@ static void sbr_gain_calc(AACContext *ac, SpectralBandReplication *sbr, av_add_sf(FLOAT_1, sbr->e_curr[e][m]), av_add_sf(FLOAT_1, sbr->q_mapped[e][m])))); } + sbr->gain[e][m] = av_add_sf(sbr->gain[e][m], FLOAT_MIN); } for (m = sbr->f_tablelim[k] - sbr->kx[1]; m < sbr->f_tablelim[k + 1] - sbr->kx[1]; m++) { sum[0] = av_add_sf(sum[0], sbr->e_origmapped[e][m]);