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| author | Martin Storsjo <martin@martin.st> | 2020-11-17 12:18:36 +0200 |
|---|---|---|
| committer | Martin Storsjo <martin@martin.st> | 2020-11-17 12:26:19 +0200 |
| commit | d23a21ab427da642c8f32bb0659ae63a86f98e96 (patch) | |
| tree | 36cf46ed27452b80a9ab4fbe0115439726ca70ab /libSBRdec/src/env_calc.cpp | |
| parent | 4e944af756ec44e73b78bbed84a01fa9d2dfa5f5 (diff) | |
| download | fdk-aac-d23a21ab427da642c8f32bb0659ae63a86f98e96.tar.gz fdk-aac-d23a21ab427da642c8f32bb0659ae63a86f98e96.tar.bz2 fdk-aac-d23a21ab427da642c8f32bb0659ae63a86f98e96.zip | |
Avoid undefined shifts in calculateSbrEnvelope
Fixes: 26845/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LIBFDK_AAC_fuzzer-5670674796118016
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Diffstat (limited to 'libSBRdec/src/env_calc.cpp')
| -rw-r--r-- | libSBRdec/src/env_calc.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libSBRdec/src/env_calc.cpp b/libSBRdec/src/env_calc.cpp index 1242833..2efff4f 100644 --- a/libSBRdec/src/env_calc.cpp +++ b/libSBRdec/src/env_calc.cpp @@ -1477,8 +1477,10 @@ void calculateSbrEnvelope( for (k = 0; k < noSubbands; k++) { int sc = scale_change - pNrgs->nrgGain_e[k] + (sc_change - 1); - pNrgs->nrgGain[k] >>= sc; pNrgs->nrgGain_e[k] += sc; + if (sc > 31) + sc = 31; + pNrgs->nrgGain[k] >>= sc; } if (!useLP) { |