[FFmpeg-devel] [PATCH] avcodec/aacsbr: Fix libavcodec/aacsbr.c:257:59: runtime error: division by zero

Michael Niedermayer michael at niedermayer.cc
Sun May 28 22:19:23 EEST 2017


Fixes: 1882/clusterfuzz-testcase-minimized-5539735650959360

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavcodec/aacsbr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c
index 15956e3f05..1d2a8d472d 100644
--- a/libavcodec/aacsbr.c
+++ b/libavcodec/aacsbr.c
@@ -241,6 +241,7 @@ static void sbr_gain_calc(AACContext *ac, SpectralBandReplication *sbr,
                                             ((1.0f + sbr->e_curr[e][m]) *
                                              (1.0f + sbr->q_mapped[e][m])));
                 }
+                sbr->gain[e][m] += FLT_MIN;
             }
             for (m = sbr->f_tablelim[k] - sbr->kx[1]; m < sbr->f_tablelim[k + 1] - sbr->kx[1]; m++) {
                 sum[0] += sbr->e_origmapped[e][m];
-- 
2.13.0



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