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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-08 13:48:45 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | f46cd02b63bce1c0c06fdaeb25b9d7c0ced71dca (patch) | |
| tree | 8a86720d37c232d39cf381e19e1dbe7f4b162feb /libavcodec | |
| parent | 4b0a1becaa73dacae9a3a0e7d54c286658ec7e16 (diff) | |
| download | ffmpeg-f46cd02b63bce1c0c06fdaeb25b9d7c0ced71dca.tar.gz | |
avcodec/ralf: Fix integer overflow in apply_lpc()
Fixes: signed integer overflow: 2147482897 + 2048 cannot be represented in type 'int'
Fixes: 19240/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5743240326414336
Fixes: 19869/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5150136636538880
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit fd313d8cf8368918882b6de0880e44ae25cc7394)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/ralf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ralf.c b/libavcodec/ralf.c index d8f1803086..15be19b526 100644 --- a/libavcodec/ralf.c +++ b/libavcodec/ralf.c @@ -330,7 +330,7 @@ static void apply_lpc(RALFContext *ctx, int ch, int length, int bits) acc = (acc + bias - 1) >> ctx->filter_bits; acc = FFMAX(acc, min_clip); } else { - acc = (acc + bias) >> ctx->filter_bits; + acc = ((unsigned)acc + bias) >> ctx->filter_bits; acc = FFMIN(acc, max_clip); } audio[i] += acc; |